22528939 has 8 divisors (see below), whose sum is σ = 23127552. Its totient is φ = 21938280.

The previous prime is 22528931. The next prime is 22528943. The reversal of 22528939 is 93982522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22528939 - 2³ = 22528931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22528931) 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, 3982 + ... + 7804.

It is an arithmetic number, because the mean of its divisors is an integer number (2890944).

Almost surely, 2^22528939 is an apocalyptic number.

22528939 is a deficient number, since it is larger than the sum of its proper divisors (598613).

22528939 is an equidigital number, since it uses as much as digits as its factorization.

22528939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977.

The product of its digits is 77760, while the sum is 40.

The square root of 22528939 is about 4746.4659484716. The cubic root of 22528939 is about 282.4317907738.

The spelling of 22528939 in words is "twenty-two million, five hundred twenty-eight thousand, nine hundred thirty-nine".