20895164 has 12 divisors (see below), whose sum is σ = 36813000. Its totient is φ = 10377168.

The previous prime is 20895163. The next prime is 20895179. The reversal of 20895164 is 46159802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20895163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16934 + ... + 18125.

It is an arithmetic number, because the mean of its divisors is an integer number (3067750).

Almost surely, 2^20895164 is an apocalyptic number.

It is an amenable number.

20895164 is a deficient number, since it is larger than the sum of its proper divisors (15917836).

20895164 is a wasteful number, since it uses less digits than its factorization.

20895164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35212 (or 35210 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 20895164 is about 4571.1228379907. The cubic root of 20895164 is about 275.4325490366.

The spelling of 20895164 in words is "twenty million, eight hundred ninety-five thousand, one hundred sixty-four".