20164472 has 16 divisors (see below), whose sum is σ = 39798600. Its totient is φ = 9551520.

The previous prime is 20164451. The next prime is 20164481. The reversal of 20164472 is 27446102.

It is a congruent number.

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, 66179 + ... + 66482.

Almost surely, 2^20164472 is an apocalyptic number.

It is an amenable number.

20164472 is a deficient number, since it is larger than the sum of its proper divisors (19634128).

20164472 is a wasteful number, since it uses less digits than its factorization.

20164472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132686 (or 132682 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 20164472 is about 4490.4868332955. The cubic root of 20164472 is about 272.1838074227.

The spelling of 20164472 in words is "twenty million, one hundred sixty-four thousand, four hundred seventy-two".