20322764 has 24 divisors (see below), whose sum is σ = 44341248. Its totient is φ = 7917840.

The previous prime is 20322751. The next prime is 20322767. The reversal of 20322764 is 46722302.

It is not an unprimeable number, because it can be changed into a prime (20322767) 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, 32684 + ... + 33299.

It is an arithmetic number, because the mean of its divisors is an integer number (1847552).

Almost surely, 2^20322764 is an apocalyptic number.

It is an amenable number.

20322764 is an abundant number, since it is smaller than the sum of its proper divisors (24018484).

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

20322764 is a wasteful number, since it uses less digits than its factorization.

20322764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66005 (or 66003 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 20322764 is about 4508.0776390830. The cubic root of 20322764 is about 272.8941701817.

The spelling of 20322764 in words is "twenty million, three hundred twenty-two thousand, seven hundred sixty-four".