20564032 has 14 divisors (see below), whose sum is σ = 40806878. Its totient is φ = 10281984.

The previous prime is 20564021. The next prime is 20564039. The reversal of 20564032 is 23046502.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 11943936 + 8620096 = 3456^2 + 2936^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20563994 and 20564012.

It is not an unprimeable number, because it can be changed into a prime (20564039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160593 + ... + 160720.

It is an arithmetic number, because the mean of its divisors is an integer number (2914777).

Almost surely, 2^20564032 is an apocalyptic number.

It is an amenable number.

20564032 is a deficient number, since it is larger than the sum of its proper divisors (20242846).

20564032 is an equidigital number, since it uses as much as digits as its factorization.

20564032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321325 (or 321315 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20564032 is about 4534.7582074461. The cubic root of 20564032 is about 273.9698405720.

The spelling of 20564032 in words is "twenty million, five hundred sixty-four thousand, thirty-two".