728057564 has 12 divisors (see below), whose sum is σ = 1372108584. Its totient is φ = 336026544.

The previous prime is 728057563. The next prime is 728057579. The reversal of 728057564 is 465750827.

It is a super-2 number, since 2×728057564² = 1060135632995228192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728057563) 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, 7000502 + ... + 7000605.

It is an arithmetic number, because the mean of its divisors is an integer number (114342382).

Almost surely, 2^728057564 is an apocalyptic number.

It is an amenable number.

728057564 is a deficient number, since it is larger than the sum of its proper divisors (644051020).

728057564 is a wasteful number, since it uses less digits than its factorization.

728057564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14001124 (or 14001122 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 44.

The square root of 728057564 is about 26982.5418372695. The cubic root of 728057564 is about 899.6119990072.

The spelling of 728057564 in words is "seven hundred twenty-eight million, fifty-seven thousand, five hundred sixty-four".