20564112 has 40 divisors (see below), whose sum is σ = 53362656. Its totient is φ = 6823936.

The previous prime is 20564087. The next prime is 20564113. The reversal of 20564112 is 21146502.

It is not an unprimeable number, because it can be changed into a prime (20564113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11503 + ... + 13169.

Almost surely, 2^20564112 is an apocalyptic number.

It is an amenable number.

20564112 is an abundant number, since it is smaller than the sum of its proper divisors (32798544).

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

20564112 is a wasteful number, since it uses less digits than its factorization.

20564112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1935 (or 1929 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20564112 is about 4534.7670281945. The cubic root of 20564112 is about 273.9701958453.

The spelling of 20564112 in words is "twenty million, five hundred sixty-four thousand, one hundred twelve".