220180172 has 6 divisors (see below), whose sum is σ = 385315308. Its totient is φ = 110090084.

The previous prime is 220180139. The next prime is 220180193. The reversal of 220180172 is 271081022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27522518 + ... + 27522525.

It is an arithmetic number, because the mean of its divisors is an integer number (64219218).

Almost surely, 2^220180172 is an apocalyptic number.

It is an amenable number.

220180172 is a deficient number, since it is larger than the sum of its proper divisors (165135136).

220180172 is a wasteful number, since it uses less digits than its factorization.

220180172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55045047 (or 55045045 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 220180172 is about 14838.4693280675. The cubic root of 220180172 is about 603.8458263282.

The spelling of 220180172 in words is "two hundred twenty million, one hundred eighty thousand, one hundred seventy-two".