38557872 has 30 divisors (see below), whose sum is σ = 107908892. Its totient is φ = 12852576.

The previous prime is 38557847. The next prime is 38557873. The reversal of 38557872 is 27875583.

38557872 is a `hidden beast` number, since 3 + 8 + 5 + 578 + 72 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (38557873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 133738 + ... + 134025.

Almost surely, 2^38557872 is an apocalyptic number.

It is an amenable number.

38557872 is an abundant number, since it is smaller than the sum of its proper divisors (69351020).

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

38557872 is a wasteful number, since it uses less digits than its factorization.

38557872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267777 (or 267768 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 38557872 is about 6209.4985304773. The cubic root of 38557872 is about 337.8347756359.

The spelling of 38557872 in words is "thirty-eight million, five hundred fifty-seven thousand, eight hundred seventy-two".