115591290 has 32 divisors (see below), whose sum is σ = 278885376. Its totient is φ = 30661440.

The previous prime is 115591271. The next prime is 115591297. The reversal of 115591290 is 92195511.

It is a happy number.

It is a super-3 number, since 3×115591290³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (115591297) 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, 4357 + ... + 15816.

It is an arithmetic number, because the mean of its divisors is an integer number (8715168).

Almost surely, 2^115591290 is an apocalyptic number.

115591290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115591290 is an abundant number, since it is smaller than the sum of its proper divisors (163294086).

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

115591290 is a wasteful number, since it uses less digits than its factorization.

115591290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20374.

The product of its (nonzero) digits is 4050, while the sum is 33.

The square root of 115591290 is about 10751.3389863775. The cubic root of 115591290 is about 487.1264409774.

The spelling of 115591290 in words is "one hundred fifteen million, five hundred ninety-one thousand, two hundred ninety".