172127744 has 40 divisors (see below), whose sum is σ = 345667608. Its totient is φ = 85626880.

The previous prime is 172127741. The next prime is 172127749. The reversal of 172127744 is 447721271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172127741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115484 + ... + 116964.

Almost surely, 2^172127744 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 172127744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172833804).

172127744 is an abundant number, since it is smaller than the sum of its proper divisors (173539864).

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

172127744 is an equidigital number, since it uses as much as digits as its factorization.

172127744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 1710 counting only the distinct ones).

The product of its digits is 21952, while the sum is 35.

The square root of 172127744 is about 13119.7463390113. The cubic root of 172127744 is about 556.2674213455.

The spelling of 172127744 in words is "one hundred seventy-two million, one hundred twenty-seven thousand, seven hundred forty-four".