117857452 has 24 divisors (see below), whose sum is σ = 211891680. Its totient is φ = 57325440.

The previous prime is 117857407. The next prime is 117857459. The reversal of 117857452 is 254758711.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (117857459) 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 7 ways as a sum of consecutive naturals, for example, 71178 + ... + 72814.

It is an arithmetic number, because the mean of its divisors is an integer number (8828820).

Almost surely, 2^117857452 is an apocalyptic number.

It is an amenable number.

117857452 is a deficient number, since it is larger than the sum of its proper divisors (94034228).

117857452 is a wasteful number, since it uses less digits than its factorization.

117857452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121 (or 2119 counting only the distinct ones).

The product of its digits is 78400, while the sum is 40.

The square root of 117857452 is about 10856.2172049015. The cubic root of 117857452 is about 490.2892253344.

The spelling of 117857452 in words is "one hundred seventeen million, eight hundred fifty-seven thousand, four hundred fifty-two".