22182140 has 24 divisors (see below), whose sum is σ = 46760112. Its totient is φ = 8839040.

The previous prime is 22182137. The next prime is 22182169. The reversal of 22182140 is 4128122.

It is a happy number.

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

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, 3647 + ... + 7593.

It is an arithmetic number, because the mean of its divisors is an integer number (1948338).

Almost surely, 2^22182140 is an apocalyptic number.

22182140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22182140 is an abundant number, since it is smaller than the sum of its proper divisors (24577972).

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

22182140 is a wasteful number, since it uses less digits than its factorization.

22182140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4237 (or 4235 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22182140 is about 4709.7919274635. The cubic root of 22182140 is about 280.9750867592.

It can be divided in two parts, 22182 and 140, that added together give a palindrome (22322).

The spelling of 22182140 in words is "twenty-two million, one hundred eighty-two thousand, one hundred forty".