117447840 has 192 divisors, whose sum is σ = 424811520. Its totient is φ = 30274560.

The previous prime is 117447839. The next prime is 117447899. The reversal of 117447840 is 48744711.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 117447795 and 117447804.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133482 + ... + 134358.

It is an arithmetic number, because the mean of its divisors is an integer number (2212560).

Almost surely, 2^117447840 is an apocalyptic number.

117447840 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 117447840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212405760).

117447840 is an abundant number, since it is smaller than the sum of its proper divisors (307363680).

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

117447840 is a wasteful number, since it uses less digits than its factorization.

117447840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 117447840 is about 10837.3354658791. The cubic root of 117447840 is about 489.7205681536.

The spelling of 117447840 in words is "one hundred seventeen million, four hundred forty-seven thousand, eight hundred forty".