865364928 has 56 divisors (see below), whose sum is σ = 2292979920. Its totient is φ = 288030720.

The previous prime is 865364921. The next prime is 865364993. The reversal of 865364928 is 829463568.

It is a super-2 number, since 2×865364928² = 1497712917224890368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (865364921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144718 + ... + 150578.

It is an arithmetic number, because the mean of its divisors is an integer number (40946070).

Almost surely, 2^865364928 is an apocalyptic number.

It is an amenable number.

865364928 is an abundant number, since it is smaller than the sum of its proper divisors (1427614992).

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

865364928 is a wasteful number, since it uses less digits than its factorization.

865364928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6645 (or 6635 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 865364928 is about 29417.0856476300. The cubic root of 865364928 is about 952.9419154822.

The spelling of 865364928 in words is "eight hundred sixty-five million, three hundred sixty-four thousand, nine hundred twenty-eight".