22864231 has 16 divisors (see below), whose sum is σ = 26256384. Its totient is φ = 19746144.

The previous prime is 22864223. The next prime is 22864243. The reversal of 22864231 is 13246822.

It is not a de Polignac number, because 22864231 - 2³ = 22864223 is a prime.

It is a super-2 number, since 2×22864231² = 1045546118442722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22864231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22864291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13240 + ... + 14866.

It is an arithmetic number, because the mean of its divisors is an integer number (1641024).

Almost surely, 2^22864231 is an apocalyptic number.

22864231 is a deficient number, since it is larger than the sum of its proper divisors (3392153).

22864231 is a wasteful number, since it uses less digits than its factorization.

22864231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1710.

The product of its digits is 4608, while the sum is 28.

The square root of 22864231 is about 4781.6556756002. The cubic root of 22864231 is about 283.8260150705.

The spelling of 22864231 in words is "twenty-two million, eight hundred sixty-four thousand, two hundred thirty-one".