117143856 has 30 divisors (see below), whose sum is σ = 327840500. Its totient is φ = 39047904.

The previous prime is 117143839. The next prime is 117143869. The reversal of 117143856 is 658341711.

117143856 is a `hidden beast` number, since 1 + 171 + 438 + 56 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 117143856.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 406606 + ... + 406893.

Almost surely, 2^117143856 is an apocalyptic number.

117143856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

117143856 is an abundant number, since it is smaller than the sum of its proper divisors (210696644).

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

117143856 is a wasteful number, since it uses less digits than its factorization.

117143856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813513 (or 813504 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 117143856 is about 10823.3015295704. The cubic root of 117143856 is about 489.2976972087.

The spelling of 117143856 in words is "one hundred seventeen million, one hundred forty-three thousand, eight hundred fifty-six".