22481518 has 16 divisors (see below), whose sum is σ = 34988976. Its totient is φ = 10825920.

The previous prime is 22481507. The next prime is 22481521. The reversal of 22481518 is 81518422.

It is a self number, because there is not a number n which added to its sum of digits gives 22481518.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4488 + ... + 8068.

It is an arithmetic number, because the mean of its divisors is an integer number (2186811).

Almost surely, 2^22481518 is an apocalyptic number.

22481518 is a deficient number, since it is larger than the sum of its proper divisors (12507458).

22481518 is a wasteful number, since it uses less digits than its factorization.

22481518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its digits is 5120, while the sum is 31.

The square root of 22481518 is about 4741.4679161627. The cubic root of 22481518 is about 282.2334886991.

The spelling of 22481518 in words is "twenty-two million, four hundred eighty-one thousand, five hundred eighteen".