22485218 has 18 divisors (see below), whose sum is σ = 39316491. Its totient is φ = 9616404.

The previous prime is 22485193. The next prime is 22485251. The reversal of 22485218 is 81258422.

It can be written as a sum of positive squares in only one way, i.e., 11242609 + 11242609 = 3353^2 + 3353^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3353.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 46703 + ... + 47181.

Almost surely, 2^22485218 is an apocalyptic number.

22485218 is a deficient number, since it is larger than the sum of its proper divisors (16831273).

22485218 is an frugal number, since it uses more digits than its factorization.

22485218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 488 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 22485218 is about 4741.8580746370. The cubic root of 22485218 is about 282.2489711445.

Multiplying 22485218 by its sum of digits (32), we get a square (719526976 = 26824²).

The spelling of 22485218 in words is "twenty-two million, four hundred eighty-five thousand, two hundred eighteen".