172306079 has 16 divisors (see below), whose sum is σ = 198804480. Its totient is φ = 147692160.

The previous prime is 172306073. The next prime is 172306093. The reversal of 172306079 is 970603271.

It is not a de Polignac number, because 172306079 - 2²⁰ = 171257503 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 (172306073) 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, 44759 + ... + 48455.

It is an arithmetic number, because the mean of its divisors is an integer number (12425280).

Almost surely, 2^172306079 is an apocalyptic number.

172306079 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

172306079 is a deficient number, since it is larger than the sum of its proper divisors (26498401).

172306079 is a wasteful number, since it uses less digits than its factorization.

172306079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 172306079 is about 13126.5410142962. The cubic root of 172306079 is about 556.4594642012.

The spelling of 172306079 in words is "one hundred seventy-two million, three hundred six thousand, seventy-nine".