22287180 has 24 divisors (see below), whose sum is σ = 62404272. Its totient is φ = 5943232.

The previous prime is 22287173. The next prime is 22287197. The reversal of 22287180 is 8178222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 185667 + ... + 185786.

It is an arithmetic number, because the mean of its divisors is an integer number (2600178).

Almost surely, 2^22287180 is an apocalyptic number.

22287180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22287180 is an abundant number, since it is smaller than the sum of its proper divisors (40117092).

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

22287180 is a wasteful number, since it uses less digits than its factorization.

22287180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371465 (or 371463 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 22287180 is about 4720.9299931264. The cubic root of 22287180 is about 281.4178928425.

The spelling of 22287180 in words is "twenty-two million, two hundred eighty-seven thousand, one hundred eighty".