220644260 has 12 divisors (see below), whose sum is σ = 463352988. Its totient is φ = 88257696.

The previous prime is 220644253. The next prime is 220644287. The reversal of 220644260 is 62446022.

It can be written as a sum of positive squares in 2 ways, for example, as 93586276 + 127057984 = 9674^2 + 11272^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5516087 + ... + 5516126.

It is an arithmetic number, because the mean of its divisors is an integer number (38612749).

Almost surely, 2^220644260 is an apocalyptic number.

220644260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220644260 is an abundant number, since it is smaller than the sum of its proper divisors (242708728).

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

220644260 is a wasteful number, since it uses less digits than its factorization.

220644260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11032222 (or 11032220 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 220644260 is about 14854.0990975555. The cubic root of 220644260 is about 604.2697835779.

The spelling of 220644260 in words is "two hundred twenty million, six hundred forty-four thousand, two hundred sixty".