20874924 has 36 divisors (see below), whose sum is σ = 60306064. Its totient is φ = 5964192.

The previous prime is 20874913. The next prime is 20874937. The reversal of 20874924 is 42947802.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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 11 ways as a sum of consecutive naturals, for example, 41167 + ... + 41670.

Almost surely, 2^20874924 is an apocalyptic number.

It is an amenable number.

20874924 is an abundant number, since it is smaller than the sum of its proper divisors (39431140).

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

20874924 is a wasteful number, since it uses less digits than its factorization.

20874924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82854 (or 82849 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 20874924 is about 4568.9084035467. The cubic root of 20874924 is about 275.3435881691.

The spelling of 20874924 in words is "twenty million, eight hundred seventy-four thousand, nine hundred twenty-four".