117857020 has 48 divisors (see below), whose sum is σ = 252893088. Its totient is φ = 46126080.

The previous prime is 117857017. The next prime is 117857021. The reversal of 117857020 is 20758711.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117857021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376384 + ... + 376696.

It is an arithmetic number, because the mean of its divisors is an integer number (5268606).

Almost surely, 2^117857020 is an apocalyptic number.

117857020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117857020 is an abundant number, since it is smaller than the sum of its proper divisors (135036068).

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

117857020 is a wasteful number, since it uses less digits than its factorization.

117857020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 117857020 is about 10856.1973084501. The cubic root of 117857020 is about 490.2886262910.

The spelling of 117857020 in words is "one hundred seventeen million, eight hundred fifty-seven thousand, twenty".