22968540 has 72 divisors (see below), whose sum is σ = 79628640. Its totient is φ = 5249664.

The previous prime is 22968521. The next prime is 22968553. The reversal of 22968540 is 4586922.

It is a happy number.

22968540 is a `hidden beast` number, since 22 + 96 + 8 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 22968495 and 22968504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7855 + ... + 10374.

Almost surely, 2^22968540 is an apocalyptic number.

22968540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22968540 is an abundant number, since it is smaller than the sum of its proper divisors (56660100).

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

22968540 is a wasteful number, since it uses less digits than its factorization.

22968540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18251 (or 18246 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22968540 is about 4792.5504692178. The cubic root of 22968540 is about 284.2569749729.

The spelling of 22968540 in words is "twenty-two million, nine hundred sixty-eight thousand, five hundred forty".