22508946 has 12 divisors (see below), whose sum is σ = 48769422. Its totient is φ = 7502976.

The previous prime is 22508929. The next prime is 22508953. The reversal of 22508946 is 64980522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12680721 + 9828225 = 3561^2 + 3135^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 22508946.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 625231 + ... + 625266.

Almost surely, 2^22508946 is an apocalyptic number.

22508946 is an abundant number, since it is smaller than the sum of its proper divisors (26260476).

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

22508946 is a wasteful number, since it uses less digits than its factorization.

22508946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250505 (or 1250502 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 22508946 is about 4744.3593877361. The cubic root of 22508946 is about 282.3482192991.

The spelling of 22508946 in words is "twenty-two million, five hundred eight thousand, nine hundred forty-six".