220537172 has 12 divisors (see below), whose sum is σ = 387543156. Its totient is φ = 109810560.

The previous prime is 220537169. The next prime is 220537183. The reversal of 220537172 is 271735022.

It can be written as a sum of positive squares in 2 ways, for example, as 201753616 + 18783556 = 14204^2 + 4334^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113423 + ... + 115350.

It is an arithmetic number, because the mean of its divisors is an integer number (32295263).

Almost surely, 2^220537172 is an apocalyptic number.

It is an amenable number.

220537172 is a deficient number, since it is larger than the sum of its proper divisors (167005984).

220537172 is a wasteful number, since it uses less digits than its factorization.

220537172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229018 (or 229016 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 220537172 is about 14850.4939985174. The cubic root of 220537172 is about 604.1720085225.

The spelling of 220537172 in words is "two hundred twenty million, five hundred thirty-seven thousand, one hundred seventy-two".