20874684 has 12 divisors (see below), whose sum is σ = 48707624. Its totient is φ = 6958224.

The previous prime is 20874677. The next prime is 20874713. The reversal of 20874684 is 48647802.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 869767 + ... + 869790.

Almost surely, 2^20874684 is an apocalyptic number.

It is an amenable number.

20874684 is an abundant number, since it is smaller than the sum of its proper divisors (27832940).

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

20874684 is a wasteful number, since it uses less digits than its factorization.

20874684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739564 (or 1739562 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 20874684 is about 4568.8821389920. The cubic root of 20874684 is about 275.3425329522.

The spelling of 20874684 in words is "twenty million, eight hundred seventy-four thousand, six hundred eighty-four".