22635940 has 24 divisors (see below), whose sum is σ = 48343680. Its totient is φ = 8900448.

The previous prime is 22635919. The next prime is 22635947. The reversal of 22635940 is 4953622.

It is not an unprimeable number, because it can be changed into a prime (22635947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8412 + ... + 10771.

It is an arithmetic number, because the mean of its divisors is an integer number (2014320).

Almost surely, 2^22635940 is an apocalyptic number.

22635940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22635940 is an abundant number, since it is smaller than the sum of its proper divisors (25707740).

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

22635940 is a wasteful number, since it uses less digits than its factorization.

22635940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19251 (or 19249 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 22635940 is about 4757.7242458974. The cubic root of 22635940 is about 282.8782205252.

The spelling of 22635940 in words is "twenty-two million, six hundred thirty-five thousand, nine hundred forty".