52718728 has 8 divisors (see below), whose sum is σ = 98847630. Its totient is φ = 26359360.

The previous prime is 52718719. The next prime is 52718753. The reversal of 52718728 is 82781725.

It can be written as a sum of positive squares in only one way, i.e., 38415204 + 14303524 = 6198^2 + 3782^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3294913 + ... + 3294928.

Almost surely, 2^52718728 is an apocalyptic number.

It is an amenable number.

52718728 is a deficient number, since it is larger than the sum of its proper divisors (46128902).

52718728 is a wasteful number, since it uses less digits than its factorization.

52718728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6589847 (or 6589843 counting only the distinct ones).

The product of its digits is 62720, while the sum is 40.

The square root of 52718728 is about 7260.7663507374. The cubic root of 52718728 is about 374.9629071459.

The spelling of 52718728 in words is "fifty-two million, seven hundred eighteen thousand, seven hundred twenty-eight".