2228180 has 12 divisors (see below), whose sum is σ = 4679220. Its totient is φ = 891264.

The previous prime is 2228167. The next prime is 2228183. The reversal of 2228180 is 818222.

It can be written as a sum of positive squares in 2 ways, for example, as 868624 + 1359556 = 932^2 + 1166^2 .

It is a super-2 number, since 2×2228180² = 9929572224800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55685 + ... + 55724.

It is an arithmetic number, because the mean of its divisors is an integer number (389935).

2^2228180 is an apocalyptic number.

2228180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2228180 is an abundant number, since it is smaller than the sum of its proper divisors (2451040).

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

2228180 is a wasteful number, since it uses less digits than its factorization.

2228180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111418 (or 111416 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 2228180 is about 1492.7089468480. The cubic root of 2228180 is about 130.6121035321.

The spelling of 2228180 in words is "two million, two hundred twenty-eight thousand, one hundred eighty".