38855172 has 24 divisors (see below), whose sum is σ = 91173600. Its totient is φ = 12878656.

The previous prime is 38855153. The next prime is 38855197. The reversal of 38855172 is 27155883.

It is a super-2 number, since 2×38855172² = 3019448782299168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38855172.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6897 + ... + 11192.

It is an arithmetic number, because the mean of its divisors is an integer number (3798900).

Almost surely, 2^38855172 is an apocalyptic number.

It is an amenable number.

38855172 is an abundant number, since it is smaller than the sum of its proper divisors (52318428).

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

38855172 is a wasteful number, since it uses less digits than its factorization.

38855172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18275 (or 18273 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 38855172 is about 6233.3916931314. The cubic root of 38855172 is about 338.7008437998.

The spelling of 38855172 in words is "thirty-eight million, eight hundred fifty-five thousand, one hundred seventy-two".