115015840 has 48 divisors (see below), whose sum is σ = 272500200. Its totient is φ = 45875200.

The previous prime is 115015837. The next prime is 115015843. The reversal of 115015840 is 48510511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (115015837) and next prime (115015843).

It can be written as a sum of positive squares in 4 ways, for example, as 114832656 + 183184 = 10716^2 + 428^2 .

It is not an unprimeable number, because it can be changed into a prime (115015843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71040 + ... + 72640.

Almost surely, 2^115015840 is an apocalyptic number.

115015840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115015840 is an abundant number, since it is smaller than the sum of its proper divisors (157484360).

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

115015840 is a wasteful number, since it uses less digits than its factorization.

115015840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 25.

The square root of 115015840 is about 10724.5438131419. The cubic root of 115015840 is about 486.3167393409.

The spelling of 115015840 in words is "one hundred fifteen million, fifteen thousand, eight hundred forty".