115391340 has 72 divisors (see below), whose sum is σ = 350925120. Its totient is φ = 30691584.

The previous prime is 115391333. The next prime is 115391357. The reversal of 115391340 is 43193511.

It is a super-2 number, since 2×115391340² = 26630322693991200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110541 + ... + 111579.

It is an arithmetic number, because the mean of its divisors is an integer number (4873960).

Almost surely, 2^115391340 is an apocalyptic number.

115391340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115391340 is an abundant number, since it is smaller than the sum of its proper divisors (235533780).

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

115391340 is a wasteful number, since it uses less digits than its factorization.

115391340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671 (or 1666 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 115391340 is about 10742.0361198425. The cubic root of 115391340 is about 486.8454014996.

The spelling of 115391340 in words is "one hundred fifteen million, three hundred ninety-one thousand, three hundred forty".