115915390 has 16 divisors (see below), whose sum is σ = 219629520. Its totient is φ = 43925760.

The previous prime is 115915379. The next prime is 115915411. The reversal of 115915390 is 93519511.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304851 + ... + 305230.

It is an arithmetic number, because the mean of its divisors is an integer number (13726845).

Almost surely, 2^115915390 is an apocalyptic number.

115915390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115915390 is a deficient number, since it is larger than the sum of its proper divisors (103714130).

115915390 is a wasteful number, since it uses less digits than its factorization.

115915390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610107.

The product of its (nonzero) digits is 6075, while the sum is 34.

The square root of 115915390 is about 10766.4009771139. The cubic root of 115915390 is about 487.5812917253.

The spelling of 115915390 in words is "one hundred fifteen million, nine hundred fifteen thousand, three hundred ninety".