108218172 has 24 divisors (see below), whose sum is σ = 254329600. Its totient is φ = 35812656.

The previous prime is 108218161. The next prime is 108218189. The reversal of 108218172 is 271812801.

It is a happy number.

It is a super-2 number, since 2×108218172² = 23422345502043168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30772 + ... + 34107.

Almost surely, 2^108218172 is an apocalyptic number.

108218172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

108218172 is an abundant number, since it is smaller than the sum of its proper divisors (146111428).

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

108218172 is a wasteful number, since it uses less digits than its factorization.

108218172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65025 (or 65023 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 30.

The square root of 108218172 is about 10402.7963548269. The cubic root of 108218172 is about 476.5407725513.

The spelling of 108218172 in words is "one hundred eight million, two hundred eighteen thousand, one hundred seventy-two".