20056984 has 32 divisors (see below), whose sum is σ = 38507040. Its totient is φ = 9792000.

The previous prime is 20056979. The next prime is 20057021. The reversal of 20056984 is 48965002.

It is a happy number.

It is a congruent number.

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, 83104 + ... + 83344.

It is an arithmetic number, because the mean of its divisors is an integer number (1203345).

Almost surely, 2^20056984 is an apocalyptic number.

It is an amenable number.

20056984 is a deficient number, since it is larger than the sum of its proper divisors (18450056).

20056984 is a wasteful number, since it uses less digits than its factorization.

20056984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 447 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20056984 is about 4478.5024282677. The cubic root of 20056984 is about 271.6993144967.

The spelling of 20056984 in words is "twenty million, fifty-six thousand, nine hundred eighty-four".