172838568 has 64 divisors (see below), whose sum is σ = 495106560. Its totient is φ = 49254336.

The previous prime is 172838563. The next prime is 172838569. The reversal of 172838568 is 865838271.

It is not an unprimeable number, because it can be changed into a prime (172838563) 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, 77355 + ... + 79557.

It is an arithmetic number, because the mean of its divisors is an integer number (7736040).

Almost surely, 2^172838568 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 172838568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247553280).

172838568 is an abundant number, since it is smaller than the sum of its proper divisors (322267992).

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

172838568 is a wasteful number, since it uses less digits than its factorization.

172838568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2686 (or 2682 counting only the distinct ones).

The product of its digits is 645120, while the sum is 48.

The square root of 172838568 is about 13146.8082818607. The cubic root of 172838568 is about 557.0320960246.

The spelling of 172838568 in words is "one hundred seventy-two million, eight hundred thirty-eight thousand, five hundred sixty-eight".