20565032 has 16 divisors (see below), whose sum is σ = 38627700. Its totient is φ = 10264320.

The previous prime is 20565001. The next prime is 20565073. The reversal of 20565032 is 23056502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19061956 + 1503076 = 4366^2 + 1226^2 .

It is a super-2 number, since 2×20565032² = 845841082322048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20564989 and 20565007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3344 + ... + 7232.

Almost surely, 2^20565032 is an apocalyptic number.

It is an amenable number.

20565032 is a deficient number, since it is larger than the sum of its proper divisors (18062668).

20565032 is a wasteful number, since it uses less digits than its factorization.

20565032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20565032 is about 4534.8684655677. The cubic root of 20565032 is about 273.9742814229.

The spelling of 20565032 in words is "twenty million, five hundred sixty-five thousand, thirty-two".