220281172 has 12 divisors (see below), whose sum is σ = 408168180. Its totient is φ = 103661696.

The previous prime is 220281137. The next prime is 220281179. The reversal of 220281172 is 271182022.

It can be written as a sum of positive squares in 2 ways, for example, as 185068816 + 35212356 = 13604^2 + 5934^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220281179) 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, 1619647 + ... + 1619782.

It is an arithmetic number, because the mean of its divisors is an integer number (34014015).

Almost surely, 2^220281172 is an apocalyptic number.

It is an amenable number.

220281172 is a deficient number, since it is larger than the sum of its proper divisors (187887008).

220281172 is a wasteful number, since it uses less digits than its factorization.

220281172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239450 (or 3239448 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 220281172 is about 14841.8722538634. The cubic root of 220281172 is about 603.9381433079.

The spelling of 220281172 in words is "two hundred twenty million, two hundred eighty-one thousand, one hundred seventy-two".