22258180 has 48 divisors (see below), whose sum is σ = 53786880. Its totient is φ = 7579008.

The previous prime is 22258169. The next prime is 22258199. The reversal of 22258180 is 8185222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23761 + ... + 24679.

It is an arithmetic number, because the mean of its divisors is an integer number (1120560).

Almost surely, 2^22258180 is an apocalyptic number.

22258180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22258180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26893440).

22258180 is an abundant number, since it is smaller than the sum of its proper divisors (31528700).

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

22258180 is a wasteful number, since it uses less digits than its factorization.

22258180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 22258180 is about 4717.8575646155. The cubic root of 22258180 is about 281.2957798730.

The spelling of 22258180 in words is "twenty-two million, two hundred fifty-eight thousand, one hundred eighty".