21814204 has 48 divisors (see below), whose sum is σ = 42577920. Its totient is φ = 9737280.

The previous prime is 21814187. The next prime is 21814229. The reversal of 21814204 is 40241812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110634 + ... + 110830.

It is an arithmetic number, because the mean of its divisors is an integer number (887040).

Almost surely, 2^21814204 is an apocalyptic number.

It is an amenable number.

21814204 is a deficient number, since it is larger than the sum of its proper divisors (20763716).

21814204 is a wasteful number, since it uses less digits than its factorization.

21814204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 21814204 is about 4670.5678455623. The cubic root of 21814204 is about 279.4129025010.

The spelling of 21814204 in words is "twenty-one million, eight hundred fourteen thousand, two hundred four".