22056140 has 24 divisors (see below), whose sum is σ = 49043232. Its totient is φ = 8303360.

The previous prime is 22056127. The next prime is 22056163. The reversal of 22056140 is 4165022.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 32096 + ... + 32775.

It is an arithmetic number, because the mean of its divisors is an integer number (2043468).

Almost surely, 2^22056140 is an apocalyptic number.

22056140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22056140 is an abundant number, since it is smaller than the sum of its proper divisors (26987092).

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

22056140 is a wasteful number, since it uses less digits than its factorization.

22056140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64897 (or 64895 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 22056140 is about 4696.3964909279. The cubic root of 22056140 is about 280.4420737800.

The spelling of 22056140 in words is "twenty-two million, fifty-six thousand, one hundred forty".