20564152 has 32 divisors (see below), whose sum is σ = 46660320. Its totient is φ = 8294400.

The previous prime is 20564147. The next prime is 20564171. The reversal of 20564152 is 25146502.

It is a super-3 number, since 3×20564152³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9849 + ... + 11752.

It is an arithmetic number, because the mean of its divisors is an integer number (1458135).

Almost surely, 2^20564152 is an apocalyptic number.

It is an amenable number.

20564152 is an abundant number, since it is smaller than the sum of its proper divisors (26096168).

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

20564152 is a wasteful number, since it uses less digits than its factorization.

20564152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21631 (or 21627 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 20564152 is about 4534.7714385623. The cubic root of 20564152 is about 273.9703734817.

The spelling of 20564152 in words is "twenty million, five hundred sixty-four thousand, one hundred fifty-two".