0o4572

0o4572 is an octal numeral literal, using the 0o prefix to indicate base-8 notation in languages such as Python 3 and newer JavaScript. The digits 4, 5, 7, and 2 are all valid in octal, since each is between 0 and 7.

Evaluating the value: 4×8^3 + 5×8^2 + 7×8 + 2 equals 2426 in decimal. In other common representations, this value is 0x97A in hexadecimal and 0b100101111010 in binary. The octal-to-binary relationship follows three bits per octal digit, making the conversion straightforward: 4 (100), 5 (101), 7 (111), 2 (010) combine to 100101111010.

In computing contexts, octal literals are often used to express certain bit patterns or permission sets, especially where grouping by three bits is convenient. The 0o prefix helps distinguish octal values from decimal or hexadecimal literals.

Notes on usage: in Python 3, 0o4572 is a valid integer literal. In Python 2 and some other languages, octal values were historically written with a leading zero (for example 04572 in Python 2), which could lead to ambiguity or errors. Today, the 0o prefix is the standard Python convention for octal literals.

Overall, 0o4572 represents the decimal number 2426, with equivalent hexadecimal 0x97A and binary 0b100101111010.