7138904 has 16 divisors (see below), whose sum is σ = 13432920. Its totient is φ = 3556800.

The previous prime is 7138883. The next prime is 7138919. The reversal of 7138904 is 4098317.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1079 + ... + 3929.

Almost surely, 2^7138904 is an apocalyptic number.

It is an amenable number.

7138904 is a deficient number, since it is larger than the sum of its proper divisors (6294016).

7138904 is a wasteful number, since it uses less digits than its factorization.

7138904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3170 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 7138904 is about 2671.8727514610. The cubic root of 7138904 is about 192.5501437932.

The spelling of 7138904 in words is "seven million, one hundred thirty-eight thousand, nine hundred four".