38791904 has 24 divisors (see below), whose sum is σ = 78236928. Its totient is φ = 18922240.

The previous prime is 38791897. The next prime is 38791927. The reversal of 38791904 is 40919783.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13472 + ... + 16095.

It is an arithmetic number, because the mean of its divisors is an integer number (3259872).

Almost surely, 2^38791904 is an apocalyptic number.

It is an amenable number.

38791904 is an abundant number, since it is smaller than the sum of its proper divisors (39445024).

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

38791904 is a wasteful number, since it uses less digits than its factorization.

38791904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29618 (or 29610 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 38791904 is about 6228.3146998205. The cubic root of 38791904 is about 338.5169080426.

The spelling of 38791904 in words is "thirty-eight million, seven hundred ninety-one thousand, nine hundred four".