22719972 has 48 divisors (see below), whose sum is σ = 60883200. Its totient is φ = 6521760.

The previous prime is 22719971. The next prime is 22719989. The reversal of 22719972 is 27991722.

It is a self number, because there is not a number n which added to its sum of digits gives 22719972.

It is not an unprimeable number, because it can be changed into a prime (22719971) 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, 2022 + ... + 7037.

It is an arithmetic number, because the mean of its divisors is an integer number (1268400).

Almost surely, 2^22719972 is an apocalyptic number.

22719972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22719972 is an abundant number, since it is smaller than the sum of its proper divisors (38163228).

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

22719972 is a wasteful number, since it uses less digits than its factorization.

22719972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9096 (or 9094 counting only the distinct ones).

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

The square root of 22719972 is about 4766.5471779895. The cubic root of 22719972 is about 283.2278336938.

The spelling of 22719972 in words is "twenty-two million, seven hundred nineteen thousand, nine hundred seventy-two".