20537164 has 12 divisors (see below), whose sum is σ = 36012424. Its totient is φ = 10247904.

The previous prime is 20537149. The next prime is 20537171. The reversal of 20537164 is 46173502.

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, 2817 + ... + 7000.

Almost surely, 2^20537164 is an apocalyptic number.

It is an amenable number.

20537164 is a deficient number, since it is larger than the sum of its proper divisors (15475260).

20537164 is a wasteful number, since it uses less digits than its factorization.

20537164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10344 (or 10342 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20537164 is about 4531.7947879400. The cubic root of 20537164 is about 273.8504698529.

The spelling of 20537164 in words is "twenty million, five hundred thirty-seven thousand, one hundred sixty-four".