22568139 has 24 divisors (see below), whose sum is σ = 36883392. Its totient is φ = 13676040.

The previous prime is 22568137. The next prime is 22568153. The reversal of 22568139 is 93186522.

It is not a de Polignac number, because 22568139 - 2¹ = 22568137 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (22568137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1549 + ... + 6894.

It is an arithmetic number, because the mean of its divisors is an integer number (1536808).

Almost surely, 2^22568139 is an apocalyptic number.

22568139 is a deficient number, since it is larger than the sum of its proper divisors (14315253).

22568139 is an equidigital number, since it uses as much as digits as its factorization.

22568139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8469 (or 8457 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 22568139 is about 4750.5935418640. The cubic root of 22568139 is about 282.5955048171.

The spelling of 22568139 in words is "twenty-two million, five hundred sixty-eight thousand, one hundred thirty-nine".