22744920 has 64 divisors (see below), whose sum is σ = 74442240. Its totient is φ = 5513600.

The previous prime is 22744901. The next prime is 22744933. The reversal of 22744920 is 2944722.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7296 + ... + 9935.

It is an arithmetic number, because the mean of its divisors is an integer number (1163160).

Almost surely, 2^22744920 is an apocalyptic number.

22744920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22744920 is an abundant number, since it is smaller than the sum of its proper divisors (51697320).

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

22744920 is a wasteful number, since it uses less digits than its factorization.

22744920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17256 (or 17252 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 22744920 is about 4769.1634486564. The cubic root of 22744920 is about 283.3314632710.

The spelling of 22744920 in words is "twenty-two million, seven hundred forty-four thousand, nine hundred twenty".