38928928 has 12 divisors (see below), whose sum is σ = 76641390. Its totient is φ = 19464448.

The previous prime is 38928907. The next prime is 38928931. The reversal of 38928928 is 82982983.

It can be written as a sum of positive squares in only one way, i.e., 36820624 + 2108304 = 6068^2 + 1452^2 .

It is a super-2 number, since 2×38928928² = 3030922870458368, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608233 + ... + 608296.

Almost surely, 2^38928928 is an apocalyptic number.

It is an amenable number.

38928928 is a deficient number, since it is larger than the sum of its proper divisors (37712462).

38928928 is a wasteful number, since it uses less digits than its factorization.

38928928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216539 (or 1216531 counting only the distinct ones).

The product of its digits is 497664, while the sum is 49.

The square root of 38928928 is about 6239.3050895112. The cubic root of 38928928 is about 338.9150188856.

The spelling of 38928928 in words is "thirty-eight million, nine hundred twenty-eight thousand, nine hundred twenty-eight".