115730640 has 160 divisors (see below), whose sum is σ = 402652800. Its totient is φ = 30551040.

The previous prime is 115730633. The next prime is 115730651. The reversal of 115730640 is 46037511.

115730640 is a `hidden beast` number, since 1 + 15 + 7 + 3 + 0 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 282756 + ... + 283164.

It is an arithmetic number, because the mean of its divisors is an integer number (2516580).

Almost surely, 2^115730640 is an apocalyptic number.

115730640 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 115730640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201326400).

115730640 is an abundant number, since it is smaller than the sum of its proper divisors (286922160).

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

115730640 is a wasteful number, since it uses less digits than its factorization.

115730640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 115730640 is about 10757.8176225478. The cubic root of 115730640 is about 487.3221126121.

The spelling of 115730640 in words is "one hundred fifteen million, seven hundred thirty thousand, six hundred forty".