116815640 has 16 divisors (see below), whose sum is σ = 262835280. Its totient is φ = 46726240.

The previous prime is 116815637. The next prime is 116815703. The reversal of 116815640 is 46518611.

It is a junction number, because it is equal to n+sod(n) for n = 116815597 and 116815606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1460156 + ... + 1460235.

It is an arithmetic number, because the mean of its divisors is an integer number (16427205).

Almost surely, 2^116815640 is an apocalyptic number.

116815640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

116815640 is an abundant number, since it is smaller than the sum of its proper divisors (146019640).

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

116815640 is a wasteful number, since it uses less digits than its factorization.

116815640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920402 (or 2920398 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 116815640 is about 10808.1284226271. The cubic root of 116815640 is about 488.8402950630.

The spelling of 116815640 in words is "one hundred sixteen million, eight hundred fifteen thousand, six hundred forty".