22659940 has 12 divisors (see below), whose sum is σ = 47585916. Its totient is φ = 9063968.

The previous prime is 22659911. The next prime is 22659979. The reversal of 22659940 is 4995622.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 12787776 = 3142^2 + 3576^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22659940.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566479 + ... + 566518.

It is an arithmetic number, because the mean of its divisors is an integer number (3965493).

Almost surely, 2^22659940 is an apocalyptic number.

22659940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22659940 is an abundant number, since it is smaller than the sum of its proper divisors (24925976).

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

22659940 is a wasteful number, since it uses less digits than its factorization.

22659940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1133006 (or 1133004 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 22659940 is about 4760.2457919734. The cubic root of 22659940 is about 282.9781601096.

The spelling of 22659940 in words is "twenty-two million, six hundred fifty-nine thousand, nine hundred forty".