20936164 has 12 divisors (see below), whose sum is σ = 38231424. Its totient is φ = 10012904.

The previous prime is 20936137. The next prime is 20936171. The reversal of 20936164 is 46163902.

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, 113692 + ... + 113875.

It is an arithmetic number, because the mean of its divisors is an integer number (3185952).

Almost surely, 2^20936164 is an apocalyptic number.

It is an amenable number.

20936164 is a deficient number, since it is larger than the sum of its proper divisors (17295260).

20936164 is a wasteful number, since it uses less digits than its factorization.

20936164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227594 (or 227592 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20936164 is about 4575.6053151468. The cubic root of 20936164 is about 275.6125804294.

The spelling of 20936164 in words is "twenty million, nine hundred thirty-six thousand, one hundred sixty-four".