13921204 has 12 divisors (see below), whose sum is σ = 26576928. Its totient is φ = 6327800.

The previous prime is 13921163. The next prime is 13921211. The reversal of 13921204 is 40212931.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 158152 + ... + 158239.

It is an arithmetic number, because the mean of its divisors is an integer number (2214744).

Almost surely, 2^13921204 is an apocalyptic number.

It is an amenable number.

13921204 is a deficient number, since it is larger than the sum of its proper divisors (12655724).

13921204 is a wasteful number, since it uses less digits than its factorization.

13921204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316406 (or 316404 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13921204 is about 3731.1129706831. The cubic root of 13921204 is about 240.5612098067.

The spelling of 13921204 in words is "thirteen million, nine hundred twenty-one thousand, two hundred four".