172472170 has 64 divisors (see below), whose sum is σ = 358525440. Its totient is φ = 59228928.

The previous prime is 172472149. The next prime is 172472171. The reversal of 172472170 is 71274271.

It is not an unprimeable number, because it can be changed into a prime (172472171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109851 + ... + 111409.

It is an arithmetic number, because the mean of its divisors is an integer number (5601960).

Almost surely, 2^172472170 is an apocalyptic number.

172472170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172472170 is an abundant number, since it is smaller than the sum of its proper divisors (186053270).

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

172472170 is a wasteful number, since it uses less digits than its factorization.

172472170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639.

The product of its (nonzero) digits is 5488, while the sum is 31.

The square root of 172472170 is about 13132.8660238350. The cubic root of 172472170 is about 556.6382027749.

The spelling of 172472170 in words is "one hundred seventy-two million, four hundred seventy-two thousand, one hundred seventy".