117451620 has 288 divisors, whose sum is σ = 436625280. Its totient is φ = 26282880.

The previous prime is 117451613. The next prime is 117451661. The reversal of 117451620 is 26154711.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9034734 + ... + 9034746.

It is an arithmetic number, because the mean of its divisors is an integer number (1516060).

Almost surely, 2^117451620 is an apocalyptic number.

117451620 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 117451620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218312640).

117451620 is an abundant number, since it is smaller than the sum of its proper divisors (319173660).

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

117451620 is a wasteful number, since it uses less digits than its factorization.

117451620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 117451620 is about 10837.5098615872. The cubic root of 117451620 is about 489.7258219011.

The spelling of 117451620 in words is "one hundred seventeen million, four hundred fifty-one thousand, six hundred twenty".