115775730 has 120 divisors (see below), whose sum is σ = 362258028. Its totient is φ = 26453952.

The previous prime is 115775719. The next prime is 115775747. The reversal of 115775730 is 37577511.

It is a happy number.

115775730 is a `hidden beast` number, since 1 + 1 + 577 + 57 + 30 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 105452361 + 10323369 = 10269^2 + 3213^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 38232 + ... + 41148.

Almost surely, 2^115775730 is an apocalyptic number.

115775730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115775730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181129014).

115775730 is an abundant number, since it is smaller than the sum of its proper divisors (246482298).

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

115775730 is a wasteful number, since it uses less digits than its factorization.

115775730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950 (or 2934 counting only the distinct ones).

The product of its (nonzero) digits is 25725, while the sum is 36.

The square root of 115775730 is about 10759.9131037383. The cubic root of 115775730 is about 487.3853931774.

The spelling of 115775730 in words is "one hundred fifteen million, seven hundred seventy-five thousand, seven hundred thirty".