172170704 has 80 divisors (see below), whose sum is σ = 364262400. Its totient is φ = 78579072.

The previous prime is 172170703. The next prime is 172170707. The reversal of 172170704 is 407071271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172170701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609019 + ... + 1609125.

It is an arithmetic number, because the mean of its divisors is an integer number (4553280).

Almost surely, 2^172170704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172170704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182131200).

172170704 is an abundant number, since it is smaller than the sum of its proper divisors (192091696).

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

172170704 is a wasteful number, since it uses less digits than its factorization.

172170704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280 (or 274 counting only the distinct ones).

The product of its (nonzero) digits is 2744, while the sum is 29.

The square root of 172170704 is about 13121.3834636444. The cubic root of 172170704 is about 556.3136956223.

The spelling of 172170704 in words is "one hundred seventy-two million, one hundred seventy thousand, seven hundred four".