22042180 has 24 divisors (see below), whose sum is σ = 46551960. Its totient is φ = 8766720.

The previous prime is 22042177. The next prime is 22042193. The reversal of 22042180 is 8124022.

It can be written as a sum of positive squares in 4 ways, for example, as 586756 + 21455424 = 766^2 + 4632^2 .

It is a congruent number.

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, 576 + ... + 6664.

It is an arithmetic number, because the mean of its divisors is an integer number (1939665).

Almost surely, 2^22042180 is an apocalyptic number.

22042180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22042180 is an abundant number, since it is smaller than the sum of its proper divisors (24509780).

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

22042180 is a wasteful number, since it uses less digits than its factorization.

22042180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6279 (or 6277 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22042180 is about 4694.9100097872. The cubic root of 22042180 is about 280.3828945279.

It can be divided in two parts, 22042 and 180, that added together give a palindrome (22222).

The spelling of 22042180 in words is "twenty-two million, forty-two thousand, one hundred eighty".