22545684 has 54 divisors (see below), whose sum is σ = 66300234. Its totient is φ = 6441120.

The previous prime is 22545641. The next prime is 22545709. The reversal of 22545684 is 48654522.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20958084 + 1587600 = 4578^2 + 1260^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4627 + ... + 8154.

Almost surely, 2^22545684 is an apocalyptic number.

It is an amenable number.

22545684 is an abundant number, since it is smaller than the sum of its proper divisors (43754550).

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

22545684 is a wasteful number, since it uses less digits than its factorization.

22545684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12805 (or 12793 counting only the distinct ones).

The product of its digits is 76800, while the sum is 36.

The square root of 22545684 is about 4748.2295647957. The cubic root of 22545684 is about 282.5017474505.

The spelling of 22545684 in words is "twenty-two million, five hundred forty-five thousand, six hundred eighty-four".