172424922 has 16 divisors (see below), whose sum is σ = 345094560. Its totient is φ = 57434192.

The previous prime is 172424911. The next prime is 172424927. The reversal of 172424922 is 229424271.

It is not an unprimeable number, because it can be changed into a prime (172424927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297 + ... + 18572.

It is an arithmetic number, because the mean of its divisors is an integer number (21568410).

Almost surely, 2^172424922 is an apocalyptic number.

172424922 is an abundant number, since it is smaller than the sum of its proper divisors (172669638).

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

172424922 is a wasteful number, since it uses less digits than its factorization.

172424922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20397.

The product of its digits is 16128, while the sum is 33.

The square root of 172424922 is about 13131.0670548893. The cubic root of 172424922 is about 556.5873685953.

It can be divided in two parts, 1724249 and 22, that added together give a palindrome (1724271).

The spelling of 172424922 in words is "one hundred seventy-two million, four hundred twenty-four thousand, nine hundred twenty-two".