20527164 has 36 divisors (see below), whose sum is σ = 59301424. Its totient is φ = 5864832.

The previous prime is 20527159. The next prime is 20527187. The reversal of 20527164 is 46172502.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40477 + ... + 40980.

Almost surely, 2^20527164 is an apocalyptic number.

It is an amenable number.

20527164 is an abundant number, since it is smaller than the sum of its proper divisors (38774260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20527164 is a wasteful number, since it uses less digits than its factorization.

20527164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81474 (or 81469 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 20527164 is about 4530.6913379748. The cubic root of 20527164 is about 273.8060146837.

Adding to 20527164 its reverse (46172502), we get a palindrome (66699666).

It can be divided in two parts, 2052 and 7164, that added together give a square (9216 = 96²).

The spelling of 20527164 in words is "twenty million, five hundred twenty-seven thousand, one hundred sixty-four".