22640835460 has 24 divisors (see below), whose sum is σ = 47611912320. Its totient is φ = 9043732704.

The previous prime is 22640835443. The next prime is 22640835479. The reversal of 22640835460 is 6453804622.

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, 772854 + ... + 801613.

It is an arithmetic number, because the mean of its divisors is an integer number (1983829680).

Almost surely, 2^22640835460 is an apocalyptic number.

22640835460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22640835460 is an abundant number, since it is smaller than the sum of its proper divisors (24971076860).

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

22640835460 is a wasteful number, since it uses less digits than its factorization.

22640835460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575195 (or 1575193 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 22640835460 in words is "twenty-two billion, six hundred forty million, eight hundred thirty-five thousand, four hundred sixty".