115583990 has 16 divisors (see below), whose sum is σ = 211977648. Its totient is φ = 45361056.

The previous prime is 115583989. The next prime is 115584017. The reversal of 115583990 is 99385511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108512 + ... + 109571.

It is an arithmetic number, because the mean of its divisors is an integer number (13248603).

Almost surely, 2^115583990 is an apocalyptic number.

115583990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115583990 is a deficient number, since it is larger than the sum of its proper divisors (96393658).

115583990 is a wasteful number, since it uses less digits than its factorization.

115583990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218143.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 115583990 is about 10750.9994884197. Note that the first 3 decimals coincide. The cubic root of 115583990 is about 487.1161861739.

The spelling of 115583990 in words is "one hundred fifteen million, five hundred eighty-three thousand, nine hundred ninety".