22799172 has 24 divisors (see below), whose sum is σ = 58034592. Its totient is φ = 6908800.

The previous prime is 22799149. The next prime is 22799173. The reversal of 22799172 is 27199722.

It is a self number, because there is not a number n which added to its sum of digits gives 22799172.

It is not an unprimeable number, because it can be changed into a prime (22799173) 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 7 ways as a sum of consecutive naturals, for example, 86229 + ... + 86492.

It is an arithmetic number, because the mean of its divisors is an integer number (2418108).

Almost surely, 2^22799172 is an apocalyptic number.

22799172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22799172 is an abundant number, since it is smaller than the sum of its proper divisors (35235420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22799172 is a wasteful number, since it uses less digits than its factorization.

22799172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172739 (or 172737 counting only the distinct ones).

The product of its digits is 31752, while the sum is 39.

The square root of 22799172 is about 4774.8478509791. The cubic root of 22799172 is about 283.5565551937.

It can be divided in two parts, 227 and 99172, that added together give a palindrome (99399).

The spelling of 22799172 in words is "twenty-two million, seven hundred ninety-nine thousand, one hundred seventy-two".