22748920 has 16 divisors (see below), whose sum is σ = 51185160. Its totient is φ = 9099552.

The previous prime is 22748903. The next prime is 22748923. The reversal of 22748920 is 2984722.

It is a super-2 number, since 2×22748920² = 1035026722332800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22748923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284322 + ... + 284401.

Almost surely, 2^22748920 is an apocalyptic number.

22748920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22748920 is an abundant number, since it is smaller than the sum of its proper divisors (28436240).

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

22748920 is a wasteful number, since it uses less digits than its factorization.

22748920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568734 (or 568730 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 22748920 is about 4769.5827909787. The cubic root of 22748920 is about 283.3480715132.

The spelling of 22748920 in words is "twenty-two million, seven hundred forty-eight thousand, nine hundred twenty".