22166562 has 16 divisors (see below), whose sum is σ = 48363552. Its totient is φ = 6717120.

The previous prime is 22166539. The next prime is 22166579. The reversal of 22166562 is 26566122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167863 + ... + 167994.

It is an arithmetic number, because the mean of its divisors is an integer number (3022722).

Almost surely, 2^22166562 is an apocalyptic number.

22166562 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22166562 is an abundant number, since it is smaller than the sum of its proper divisors (26196990).

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

22166562 is a wasteful number, since it uses less digits than its factorization.

22166562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335873.

The product of its digits is 8640, while the sum is 30.

The square root of 22166562 is about 4708.1378484492. The cubic root of 22166562 is about 280.9092972708.

It can be divided in two parts, 2216 and 6562, that added together give a palindrome (8778).

The spelling of 22166562 in words is "twenty-two million, one hundred sixty-six thousand, five hundred sixty-two".