117890520 has 256 divisors, whose sum is σ = 413614080. Its totient is φ = 26611200.

The previous prime is 117890519. The next prime is 117890537. The reversal of 117890520 is 25098711.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1759527 + ... + 1759593.

It is an arithmetic number, because the mean of its divisors is an integer number (1615680).

Almost surely, 2^117890520 is an apocalyptic number.

117890520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117890520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206807040).

117890520 is an abundant number, since it is smaller than the sum of its proper divisors (295723560).

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

117890520 is a wasteful number, since it uses less digits than its factorization.

117890520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 117890520 is about 10857.7400963552. The cubic root of 117890520 is about 490.3350755480.

The spelling of 117890520 in words is "one hundred seventeen million, eight hundred ninety thousand, five hundred twenty".