128570

128570 is a natural number that follows 128569 and precedes 128571. It is an even composite number.

Its prime factorization is 128570 = 2 × 5 × 13 × 23 × 43. Because it is the product of five distinct primes, 128570 is squarefree and has 2^5 = 32 positive divisors.

The sum of its divisors, including itself, is σ(128570) = (1+2)(1+5)(1+13)(1+23)(1+43) = 266,112. The sum of proper divisors is 266,112 − 128,570 = 137,542, which means 128570 is an abundant number with an abundance of 8,972.

Euler’s totient function yields φ(128570) = 44,352, reflecting the count of positive integers up to 128570 that are coprime with the number.

In common numeral systems, 128570 is represented in hexadecimal as 0x1F63A and in binary as 11111011000111010.

As a squarefree composite with multiple distinct prime factors, 128570 has a relatively large number of divisors for its size and serves as an example of an abundant, non-prime integer.