3215256928 has 24 divisors (see below), whose sum is σ = 6816963888. Its totient is φ = 1483964544.

The previous prime is 3215256907. The next prime is 3215256929. The reversal of 3215256928 is 8296525123.

It is a super-2 number, since 2×3215256928² = 20675754226103994368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3215256929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3864076 + ... + 3864907.

It is an arithmetic number, because the mean of its divisors is an integer number (284040162).

Almost surely, 2^3215256928 is an apocalyptic number.

It is an amenable number.

3215256928 is an abundant number, since it is smaller than the sum of its proper divisors (3601706960).

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

3215256928 is a wasteful number, since it uses less digits than its factorization.

3215256928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7729006 (or 7728998 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 3215256928 is about 56703.2356043286. The cubic root of 3215256928 is about 1475.9508457668.

The spelling of 3215256928 in words is "three billion, two hundred fifteen million, two hundred fifty-six thousand, nine hundred twenty-eight".