22724372 has 24 divisors (see below), whose sum is σ = 43583232. Its totient is φ = 10281600.

The previous prime is 22724363. The next prime is 22724417. The reversal of 22724372 is 27342722.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9533 + ... + 11675.

It is an arithmetic number, because the mean of its divisors is an integer number (1815968).

Almost surely, 2^22724372 is an apocalyptic number.

22724372 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22724372 is a deficient number, since it is larger than the sum of its proper divisors (20858860).

22724372 is a wasteful number, since it uses less digits than its factorization.

22724372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399 (or 2397 counting only the distinct ones).

The product of its digits is 9408, while the sum is 29.

The square root of 22724372 is about 4767.0087056770. The cubic root of 22724372 is about 283.2461160231.

The spelling of 22724372 in words is "twenty-two million, seven hundred twenty-four thousand, three hundred seventy-two".