172828782 has 160 divisors (see below), whose sum is σ = 473256960. Its totient is φ = 46675440.

The previous prime is 172828781. The next prime is 172828793. The reversal of 172828782 is 287828271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172828781) 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 79 ways as a sum of consecutive naturals, for example, 4019253 + ... + 4019295.

It is an arithmetic number, because the mean of its divisors is an integer number (2957856).

Almost surely, 2^172828782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172828782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236628480).

172828782 is an abundant number, since it is smaller than the sum of its proper divisors (300428178).

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

172828782 is an equidigital number, since it uses as much as digits as its factorization.

172828782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 86 counting only the distinct ones).

The product of its digits is 200704, while the sum is 45.

The square root of 172828782 is about 13146.4360950031. The cubic root of 172828782 is about 557.0215829023.

The spelling of 172828782 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, seven hundred eighty-two".