117726840 has 384 divisors, whose sum is σ = 496005120. Its totient is φ = 23500800.

The previous prime is 117726823. The next prime is 117726877. The reversal of 117726840 is 48627711.

117726840 is a nontrivial binomial coefficient, being equal to C(15345, 2).

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 = 117726795 and 117726804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 859252 + ... + 859388.

It is an arithmetic number, because the mean of its divisors is an integer number (1291680).

Almost surely, 2^117726840 is an apocalyptic number.

117726840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

117726840 is the 15344-th triangular number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 117726840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248002560).

117726840 is an abundant number, since it is smaller than the sum of its proper divisors (378278280).

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

117726840 is a wasteful number, since it uses less digits than its factorization.

117726840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 117726840 is about 10850.1999981567. The cubic root of 117726840 is about 490.1080422591.

The spelling of 117726840 in words is "one hundred seventeen million, seven hundred twenty-six thousand, eight hundred forty".