21902674 has 16 divisors (see below), whose sum is σ = 33758208. Its totient is φ = 10653552.

The previous prime is 21902663. The next prime is 21902689. The reversal of 21902674 is 47620912.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12649 + ... + 14275.

It is an arithmetic number, because the mean of its divisors is an integer number (2109888).

Almost surely, 2^21902674 is an apocalyptic number.

21902674 is a deficient number, since it is larger than the sum of its proper divisors (11855534).

21902674 is a wasteful number, since it uses less digits than its factorization.

21902674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 21902674 is about 4680.0292734127. The cubic root of 21902674 is about 279.7901233365.

The spelling of 21902674 in words is "twenty-one million, nine hundred two thousand, six hundred seventy-four".