172798134 has 16 divisors (see below), whose sum is σ = 346117872. Its totient is φ = 57512448.

The previous prime is 172798117. The next prime is 172798163. The reversal of 172798134 is 431897271.

It is a super-2 number, since 2×172798134² = 59718390227763912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17359 + ... + 25434.

It is an arithmetic number, because the mean of its divisors is an integer number (21632367).

Almost surely, 2^172798134 is an apocalyptic number.

172798134 is an abundant number, since it is smaller than the sum of its proper divisors (173319738).

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

172798134 is a wasteful number, since it uses less digits than its factorization.

172798134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43471.

The product of its digits is 84672, while the sum is 42.

The square root of 172798134 is about 13145.2704042176. The cubic root of 172798134 is about 556.9886551178.

The spelling of 172798134 in words is "one hundred seventy-two million, seven hundred ninety-eight thousand, one hundred thirty-four".