22963640 has 32 divisors (see below), whose sum is σ = 59050080. Its totient is φ = 7873152.

The previous prime is 22963631. The next prime is 22963657. The reversal of 22963640 is 4636922.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22963597 and 22963606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40727 + ... + 41286.

It is an arithmetic number, because the mean of its divisors is an integer number (1845315).

Almost surely, 2^22963640 is an apocalyptic number.

22963640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22963640 is an abundant number, since it is smaller than the sum of its proper divisors (36086440).

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

22963640 is a wasteful number, since it uses less digits than its factorization.

22963640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82031 (or 82027 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 22963640 is about 4792.0392318928. The cubic root of 22963640 is about 284.2367595211.

The spelling of 22963640 in words is "twenty-two million, nine hundred sixty-three thousand, six hundred forty".