117710820 has 60 divisors (see below), whose sum is σ = 369268284. Its totient is φ = 31389120.

The previous prime is 117710819. The next prime is 117710851. The reversal of 117710820 is 28017711.

It can be written as a sum of positive squares in 2 ways, for example, as 20412324 + 97298496 = 4518^2 + 9864^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 34711 + ... + 37950.

Almost surely, 2^117710820 is an apocalyptic number.

117710820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117710820 is an abundant number, since it is smaller than the sum of its proper divisors (251557464).

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

117710820 is a wasteful number, since it uses less digits than its factorization.

117710820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72682 (or 72671 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 117710820 is about 10849.4617378006. The cubic root of 117710820 is about 490.0858103223.

The spelling of 117710820 in words is "one hundred seventeen million, seven hundred ten thousand, eight hundred twenty".