22865913 has 12 divisors (see below), whose sum is σ = 37747008. Its totient is φ = 13066200.

The previous prime is 22865903. The next prime is 22865939. The reversal of 22865913 is 31956822.

It is a de Polignac number, because none of the positive numbers 2^k-22865913 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (22865903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181413 + ... + 181538.

It is an arithmetic number, because the mean of its divisors is an integer number (3145584).

Almost surely, 2^22865913 is an apocalyptic number.

It is an amenable number.

22865913 is a deficient number, since it is larger than the sum of its proper divisors (14881095).

22865913 is a wasteful number, since it uses less digits than its factorization.

22865913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362964 (or 362961 counting only the distinct ones).

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

The square root of 22865913 is about 4781.8315528676. The cubic root of 22865913 is about 283.8329747572.

Subtracting 22865913 from its reverse (31956822), we obtain a palindrome (9090909).

The spelling of 22865913 in words is "twenty-two million, eight hundred sixty-five thousand, nine hundred thirteen".