20013388 has 12 divisors (see below), whose sum is σ = 35503720. Its totient is φ = 9869472.

The previous prime is 20013379. The next prime is 20013391. The reversal of 20013388 is 88331002.

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, 33978 + ... + 34561.

Almost surely, 2^20013388 is an apocalyptic number.

It is an amenable number.

20013388 is a deficient number, since it is larger than the sum of its proper divisors (15490332).

20013388 is a wasteful number, since it uses less digits than its factorization.

20013388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68616 (or 68614 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20013388 is about 4473.6325284940. The cubic root of 20013388 is about 271.5023158549.

The spelling of 20013388 in words is "twenty million, thirteen thousand, three hundred eighty-eight".