220172071 has 8 divisors (see below), whose sum is σ = 251903520. Its totient is φ = 188510208.

The previous prime is 220172063. The next prime is 220172107. The reversal of 220172071 is 170271022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220172071 - 2³ = 220172063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220172371) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 10426 + ... + 23431.

It is an arithmetic number, because the mean of its divisors is an integer number (31487940).

Almost surely, 2^220172071 is an apocalyptic number.

220172071 is a deficient number, since it is larger than the sum of its proper divisors (31731449).

220172071 is an equidigital number, since it uses as much as digits as its factorization.

220172071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34793.

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 220172071 is about 14838.1963526569. The cubic root of 220172071 is about 603.8384205523.

The spelling of 220172071 in words is "two hundred twenty million, one hundred seventy-two thousand, seventy-one".