22790831 has 6 divisors (see below), whose sum is σ = 26511840. Its totient is φ = 19534956.

The previous prime is 22790821. The next prime is 22790837. The reversal of 22790831 is 13809722.

It is a de Polignac number, because none of the positive numbers 2^k-22790831 is a prime.

It is a super-2 number, since 2×22790831² = 1038843955341122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22790837) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 232511 + ... + 232608.

It is an arithmetic number, because the mean of its divisors is an integer number (4418640).

Almost surely, 2^22790831 is an apocalyptic number.

22790831 is a deficient number, since it is larger than the sum of its proper divisors (3721009).

22790831 is an equidigital number, since it uses as much as digits as its factorization.

22790831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465133 (or 465126 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22790831 is about 4773.9743401070. The cubic root of 22790831 is about 283.5219715736.

The spelling of 22790831 in words is "twenty-two million, seven hundred ninety thousand, eight hundred thirty-one".