30000

30,000, or thirty thousand, is the natural number that follows 29,999 and precedes 30,001. It can be expressed as 30 × 1,000 or as 3 × 10,000. Its prime factorization is 2^4 × 3 × 5^4, making it a composite number with 50 positive divisors.

As a base-10 Harshad (Niven) number, 30,000 is divisible by the sum of its digits (3), yielding 10,000. Its factorization shows it is divisible by 2, 3, and 5, and thus by many other integers. The number’s trailing zeros reflect divisibility by powers of 10: it is divisible by 10, 100, 1,000, and 10,000.

Representations in other bases include hexadecimal and binary. In hexadecimal, 30,000 is 0x7530. In binary, a 15-bit form is 111010100110000. In Roman numerals, large values are often written with an overline; 30,000 can be represented as XXX with a bar above it to denote multiplication by 1,000.

Usage and context: 30,000 is a common rounding figure in budgeting, statistics, and long-range planning. Its factorization and divisor count make it a convenient example in discussions of composite numbers, multiples of 10,000, and base representations.