22256140 has 24 divisors (see below), whose sum is σ = 48246912. Its totient is φ = 8615040.

The previous prime is 22256123. The next prime is 22256189. The reversal of 22256140 is 4165222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17329 + ... + 18568.

It is an arithmetic number, because the mean of its divisors is an integer number (2010288).

Almost surely, 2^22256140 is an apocalyptic number.

22256140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22256140 is an abundant number, since it is smaller than the sum of its proper divisors (25990772).

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

22256140 is a wasteful number, since it uses less digits than its factorization.

22256140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35937 (or 35935 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 22256140 is about 4717.6413598323. The cubic root of 22256140 is about 281.2871858651.

The spelling of 22256140 in words is "twenty-two million, two hundred fifty-six thousand, one hundred forty".