172422544 has 80 divisors (see below), whose sum is σ = 393724800. Its totient is φ = 71626752.

The previous prime is 172422529. The next prime is 172422571. The reversal of 172422544 is 445224271.

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 15 ways as a sum of consecutive naturals, for example, 640842 + ... + 641110.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^172422544 is an apocalyptic number.

172422544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172422544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196862400).

172422544 is an abundant number, since it is smaller than the sum of its proper divisors (221302256).

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

172422544 is a wasteful number, since it uses less digits than its factorization.

172422544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 434 counting only the distinct ones).

The product of its digits is 17920, while the sum is 31.

The square root of 172422544 is about 13130.9765059572. The cubic root of 172422544 is about 556.5848098568.

The spelling of 172422544 in words is "one hundred seventy-two million, four hundred twenty-two thousand, five hundred forty-four".