117317780 has 36 divisors (see below), whose sum is σ = 260032500. Its totient is φ = 44454528.

The previous prime is 117317771. The next prime is 117317801. The reversal of 117317780 is 87713711.

It can be written as a sum of positive squares in 2 ways, for example, as 56040196 + 61277584 = 7486^2 + 7828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 117317780.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 905 + ... + 15344.

It is an arithmetic number, because the mean of its divisors is an integer number (7223125).

Almost surely, 2^117317780 is an apocalyptic number.

117317780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117317780 is an abundant number, since it is smaller than the sum of its proper divisors (142714720).

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

117317780 is a wasteful number, since it uses less digits than its factorization.

117317780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16296 (or 16275 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 35.

The square root of 117317780 is about 10831.3332512669. Note that the first 3 decimals coincide. The cubic root of 117317780 is about 489.5397316152.

The spelling of 117317780 in words is "one hundred seventeen million, three hundred seventeen thousand, seven hundred eighty".