117215740 has 12 divisors (see below), whose sum is σ = 246153096. Its totient is φ = 46886288.

The previous prime is 117215723. The next prime is 117215753. The reversal of 117215740 is 47512711.

It is a junction number, because it is equal to n+sod(n) for n = 117215699 and 117215708.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2930374 + ... + 2930413.

It is an arithmetic number, because the mean of its divisors is an integer number (20512758).

Almost surely, 2^117215740 is an apocalyptic number.

117215740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

117215740 is an abundant number, since it is smaller than the sum of its proper divisors (128937356).

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

117215740 is a wasteful number, since it uses less digits than its factorization.

117215740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860796 (or 5860794 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 28.

The square root of 117215740 is about 10826.6218184621. The cubic root of 117215740 is about 489.3977607400.

The spelling of 117215740 in words is "one hundred seventeen million, two hundred fifteen thousand, seven hundred forty".