117827720 has 32 divisors (see below), whose sum is σ = 269611200. Its totient is φ = 46331328.

The previous prime is 117827719. The next prime is 117827737. The reversal of 117827720 is 27728711.

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 7 ways as a sum of consecutive naturals, for example, 22604 + ... + 27323.

It is an arithmetic number, because the mean of its divisors is an integer number (8425350).

Almost surely, 2^117827720 is an apocalyptic number.

117827720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117827720 is an abundant number, since it is smaller than the sum of its proper divisors (151783480).

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

117827720 is a wasteful number, since it uses less digits than its factorization.

117827720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49997 (or 49993 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 35.

The square root of 117827720 is about 10854.8477649389. The cubic root of 117827720 is about 490.2479933066.

Subtracting from 117827720 its reverse (27728711), we obtain a palindrome (90099009).

The spelling of 117827720 in words is "one hundred seventeen million, eight hundred twenty-seven thousand, seven hundred twenty".