315256728 has 32 divisors (see below), whose sum is σ = 793902960. Its totient is φ = 104317440.

The previous prime is 315256691. The next prime is 315256751. The reversal of 315256728 is 827652513.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44653 + ... + 51228.

Almost surely, 2^315256728 is an apocalyptic number.

It is an amenable number.

315256728 is an abundant number, since it is smaller than the sum of its proper divisors (478646232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315256728 is a wasteful number, since it uses less digits than its factorization.

315256728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96027 (or 96023 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 315256728 is about 17755.4703683118. The cubic root of 315256728 is about 680.5940080633.

The spelling of 315256728 in words is "three hundred fifteen million, two hundred fifty-six thousand, seven hundred twenty-eight".