20943474 has 16 divisors (see below), whose sum is σ = 42074208. Its totient is φ = 6949952.

The previous prime is 20943469. The next prime is 20943493. The reversal of 20943474 is 47434902.

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, 6327 + ... + 9050.

It is an arithmetic number, because the mean of its divisors is an integer number (2629638).

Almost surely, 2^20943474 is an apocalyptic number.

20943474 is an abundant number, since it is smaller than the sum of its proper divisors (21130734).

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

20943474 is a wasteful number, since it uses less digits than its factorization.

20943474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 20943474 is about 4576.4040468473. The cubic root of 20943474 is about 275.6446540147.

The spelling of 20943474 in words is "twenty million, nine hundred forty-three thousand, four hundred seventy-four".