172828818 has 24 divisors (see below), whose sum is σ = 380811600. Its totient is φ = 56632824.

The previous prime is 172828793. The next prime is 172828829. The reversal of 172828818 is 818828271.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 80308 + ... + 82431.

It is an arithmetic number, because the mean of its divisors is an integer number (15867150).

Almost surely, 2^172828818 is an apocalyptic number.

172828818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

172828818 is an abundant number, since it is smaller than the sum of its proper divisors (207982782).

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

172828818 is a wasteful number, since it uses less digits than its factorization.

172828818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162806 (or 162803 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 172828818 is about 13146.4374641954. The cubic root of 172828818 is about 557.0216215779.

The spelling of 172828818 in words is "one hundred seventy-two million, eight hundred twenty-eight thousand, eight hundred eighteen".