22166456 has 16 divisors (see below), whose sum is σ = 44759400. Its totient is φ = 10230624.

The previous prime is 22166447. The next prime is 22166461. The reversal of 22166456 is 65466122.

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 3 ways as a sum of consecutive naturals, for example, 106466 + ... + 106673.

Almost surely, 2^22166456 is an apocalyptic number.

22166456 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

22166456 is an abundant number, since it is smaller than the sum of its proper divisors (22592944).

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

22166456 is a wasteful number, since it uses less digits than its factorization.

22166456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213158 (or 213154 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 22166456 is about 4708.1265913312. The cubic root of 22166456 is about 280.9088495028.

It can be divided in two parts, 22166 and 456, that added together give a palindrome (22622).

The spelling of 22166456 in words is "twenty-two million, one hundred sixty-six thousand, four hundred fifty-six".