172154424 has 64 divisors (see below), whose sum is σ = 465171840. Its totient is φ = 52778880.

The previous prime is 172154293. The next prime is 172154429. The reversal of 172154424 is 424451271.

It is a junction number, because it is equal to n+sod(n) for n = 172154391 and 172154400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172154429) by changing a digit.

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, 102439 + ... + 104105.

It is an arithmetic number, because the mean of its divisors is an integer number (7268310).

Almost surely, 2^172154424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172154424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (232585920).

172154424 is an abundant number, since it is smaller than the sum of its proper divisors (293017416).

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

172154424 is a wasteful number, since it uses less digits than its factorization.

172154424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020 (or 2016 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 172154424 is about 13120.7630875647. The cubic root of 172154424 is about 556.2961605593.

It can be divided in two parts, 172154 and 424, that added together give a triangular number (172578 = T₅₈₇).

The spelling of 172154424 in words is "one hundred seventy-two million, one hundred fifty-four thousand, four hundred twenty-four".