38172868 has 12 divisors (see below), whose sum is σ = 67718140. Its totient is φ = 18824832.

The previous prime is 38172859. The next prime is 38172899. The reversal of 38172868 is 86827183.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22108804 + 16064064 = 4702^2 + 4008^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65073 + ... + 65656.

Almost surely, 2^38172868 is an apocalyptic number.

It is an amenable number.

38172868 is a deficient number, since it is larger than the sum of its proper divisors (29545272).

38172868 is a wasteful number, since it uses less digits than its factorization.

38172868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130806 (or 130804 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 38172868 is about 6178.4195390083. The cubic root of 38172868 is about 336.7065747984.

The spelling of 38172868 in words is "thirty-eight million, one hundred seventy-two thousand, eight hundred sixty-eight".