172745392 has 40 divisors (see below), whose sum is σ = 351406080. Its totient is φ = 82155840.

The previous prime is 172745369. The next prime is 172745393. The reversal of 172745392 is 293547271.

It is not an unprimeable number, because it can be changed into a prime (172745393) 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 7 ways as a sum of consecutive naturals, for example, 26313 + ... + 32215.

It is an arithmetic number, because the mean of its divisors is an integer number (8785152).

Almost surely, 2^172745392 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 172745392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175703040).

172745392 is an abundant number, since it is smaller than the sum of its proper divisors (178660688).

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

172745392 is a wasteful number, since it uses less digits than its factorization.

172745392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6001 (or 5995 counting only the distinct ones).

The product of its digits is 105840, while the sum is 40.

The square root of 172745392 is about 13143.2641303445. The cubic root of 172745392 is about 556.9319807308.

The spelling of 172745392 in words is "one hundred seventy-two million, seven hundred forty-five thousand, three hundred ninety-two".