22533940 has 48 divisors (see below), whose sum is σ = 55601280. Its totient is φ = 7562880.

The previous prime is 22533937. The next prime is 22533941. The reversal of 22533940 is 4933522.

It is a junction number, because it is equal to n+sod(n) for n = 22533899 and 22533908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22533941) 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, 1080 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (1158360).

Almost surely, 2^22533940 is an apocalyptic number.

22533940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22533940 is an abundant number, since it is smaller than the sum of its proper divisors (33067340).

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

22533940 is a wasteful number, since it uses less digits than its factorization.

22533940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912 (or 7910 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 22533940 is about 4746.9927322464. The cubic root of 22533940 is about 282.4526874064.

The spelling of 22533940 in words is "twenty-two million, five hundred thirty-three thousand, nine hundred forty".