20039976 has 48 divisors (see below), whose sum is σ = 59211360. Its totient is φ = 6072480.

The previous prime is 20039959. The next prime is 20039983. The reversal of 20039976 is 67993002.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20039976.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11860 + ... + 13443.

It is an arithmetic number, because the mean of its divisors is an integer number (1233570).

Almost surely, 2^20039976 is an apocalyptic number.

It is an amenable number.

20039976 is an abundant number, since it is smaller than the sum of its proper divisors (39171384).

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

20039976 is a wasteful number, since it uses less digits than its factorization.

20039976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25326 (or 25319 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 20039976 is about 4476.6031765168. The cubic root of 20039976 is about 271.6224938948.

The spelling of 20039976 in words is "twenty million, thirty-nine thousand, nine hundred seventy-six".