38993628 has 12 divisors (see below), whose sum is σ = 90985160. Its totient is φ = 12997872.

The previous prime is 38993627. The next prime is 38993639. The reversal of 38993628 is 82639983.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38993621) 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, 1624723 + ... + 1624746.

Almost surely, 2^38993628 is an apocalyptic number.

It is an amenable number.

38993628 is an abundant number, since it is smaller than the sum of its proper divisors (51991532).

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

38993628 is a wasteful number, since it uses less digits than its factorization.

38993628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3249476 (or 3249474 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 38993628 is about 6244.4878092603. The cubic root of 38993628 is about 339.1026742362.

It can be divided in two parts, 38993 and 628, that added together give a triangular number (39621 = T₂₈₁).

The spelling of 38993628 in words is "thirty-eight million, nine hundred ninety-three thousand, six hundred twenty-eight".