117857956 has 12 divisors (see below), whose sum is σ = 208254592. Its totient is φ = 58356648.

The previous prime is 117857951. The next prime is 117858019. The reversal of 117857956 is 659758711.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (117857951) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 142620 + ... + 143443.

Almost surely, 2^117857956 is an apocalyptic number.

It is an amenable number.

117857956 is a deficient number, since it is larger than the sum of its proper divisors (90396636).

117857956 is a wasteful number, since it uses less digits than its factorization.

117857956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286170 (or 286168 counting only the distinct ones).

The product of its digits is 529200, while the sum is 49.

The square root of 117857956 is about 10856.2404173821. The cubic root of 117857956 is about 490.2899242166.

The spelling of 117857956 in words is "one hundred seventeen million, eight hundred fifty-seven thousand, nine hundred fifty-six".