22055140 has 12 divisors (see below), whose sum is σ = 46315836. Its totient is φ = 8822048.

The previous prime is 22055113. The next prime is 22055149. The reversal of 22055140 is 4155022.

It can be written as a sum of positive squares in 2 ways, for example, as 2359296 + 19695844 = 1536^2 + 4438^2 .

It is not an unprimeable number, because it can be changed into a prime (22055149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 551359 + ... + 551398.

It is an arithmetic number, because the mean of its divisors is an integer number (3859653).

Almost surely, 2^22055140 is an apocalyptic number.

22055140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22055140 is an abundant number, since it is smaller than the sum of its proper divisors (24260696).

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

22055140 is a wasteful number, since it uses less digits than its factorization.

22055140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1102766 (or 1102764 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 22055140 is about 4696.2900251156. The cubic root of 22055140 is about 280.4378354090.

The spelling of 22055140 in words is "twenty-two million, fifty-five thousand, one hundred forty".