172422279 has 24 divisors (see below), whose sum is σ = 272218752. Its totient is φ = 104693760.

The previous prime is 172422259. The next prime is 172422307. The reversal of 172422279 is 972224271.

172422279 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172422279 - 2⁵ = 172422247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172422259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13434 + ... + 22919.

It is an arithmetic number, because the mean of its divisors is an integer number (11342448).

Almost surely, 2^172422279 is an apocalyptic number.

172422279 is a deficient number, since it is larger than the sum of its proper divisors (99796473).

172422279 is a wasteful number, since it uses less digits than its factorization.

172422279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36407 (or 36404 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 172422279 is about 13130.9664153100. The cubic root of 172422279 is about 556.5845247142.

The spelling of 172422279 in words is "one hundred seventy-two million, four hundred twenty-two thousand, two hundred seventy-nine".