115615830 has 32 divisors (see below), whose sum is σ = 302704128. Its totient is φ = 28028000.

The previous prime is 115615823. The next prime is 115615831. The reversal of 115615830 is 38516511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115615831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174846 + ... + 175505.

It is an arithmetic number, because the mean of its divisors is an integer number (9459504).

Almost surely, 2^115615830 is an apocalyptic number.

115615830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115615830 is an abundant number, since it is smaller than the sum of its proper divisors (187088298).

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

115615830 is a wasteful number, since it uses less digits than its factorization.

115615830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350372.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 115615830 is about 10752.4801790099. The cubic root of 115615830 is about 487.1609108093.

It can be divided in two parts, 11561 and 5830, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 115615830 in words is "one hundred fifteen million, six hundred fifteen thousand, eight hundred thirty".