117221688 has 32 divisors (see below), whose sum is σ = 325616400. Its totient is φ = 39073824.

The previous prime is 117221669. The next prime is 117221693. The reversal of 117221688 is 886122711.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 271131 + ... + 271562.

Almost surely, 2^117221688 is an apocalyptic number.

117221688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

117221688 is an abundant number, since it is smaller than the sum of its proper divisors (208394712).

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

117221688 is a wasteful number, since it uses less digits than its factorization.

117221688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542708 (or 542698 counting only the distinct ones).

The product of its digits is 10752, while the sum is 36.

The square root of 117221688 is about 10826.8965082336. The cubic root of 117221688 is about 489.4060386062.

The spelling of 117221688 in words is "one hundred seventeen million, two hundred twenty-one thousand, six hundred eighty-eight".