117451520 has 72 divisors (see below), whose sum is σ = 284770080. Its totient is φ = 46407680.

The previous prime is 117451507. The next prime is 117451549. The reversal of 117451520 is 25154711.

It is a self number, because there is not a number n which added to its sum of digits gives 117451520.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113405 + ... + 114435.

It is an arithmetic number, because the mean of its divisors is an integer number (3955140).

Almost surely, 2^117451520 is an apocalyptic number.

117451520 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 117451520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142385040).

117451520 is an abundant number, since it is smaller than the sum of its proper divisors (167318560).

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

117451520 is an equidigital number, since it uses as much as digits as its factorization.

117451520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1141 (or 1127 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 26.

The square root of 117451520 is about 10837.5052479803. The cubic root of 117451520 is about 489.7256829145.

The spelling of 117451520 in words is "one hundred seventeen million, four hundred fifty-one thousand, five hundred twenty".