115790640 has 160 divisors (see below), whose sum is σ = 413783040. Its totient is φ = 26237952.

The previous prime is 115790639. The next prime is 115790641. The reversal of 115790640 is 46097511.

It is an interprime number because it is at equal distance from previous prime (115790639) and next prime (115790641).

It is not an unprimeable number, because it can be changed into a prime (115790641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 263541 + ... + 263979.

It is an arithmetic number, because the mean of its divisors is an integer number (2586144).

Almost surely, 2^115790640 is an apocalyptic number.

115790640 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 115790640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206891520).

115790640 is an abundant number, since it is smaller than the sum of its proper divisors (297992400).

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

115790640 is a wasteful number, since it uses less digits than its factorization.

115790640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 613 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 115790640 is about 10760.6059308944. The cubic root of 115790640 is about 487.4063146730.

The spelling of 115790640 in words is "one hundred fifteen million, seven hundred ninety thousand, six hundred forty".