22956813 has 24 divisors (see below), whose sum is σ = 36724896. Its totient is φ = 13701600.

The previous prime is 22956811. The next prime is 22956881. The reversal of 22956813 is 31865922.

It is not a de Polignac number, because 22956813 - 2¹ = 22956811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22956811) 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, 4903 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (1530204).

Almost surely, 2^22956813 is an apocalyptic number.

It is an amenable number.

22956813 is a deficient number, since it is larger than the sum of its proper divisors (13768083).

22956813 is a wasteful number, since it uses less digits than its factorization.

22956813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3545 (or 3542 counting only the distinct ones).

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

The square root of 22956813 is about 4791.3268517186. The cubic root of 22956813 is about 284.2085892385.

The spelling of 22956813 in words is "twenty-two million, nine hundred fifty-six thousand, eight hundred thirteen".