115866790 has 32 divisors (see below), whose sum is σ = 225128736. Its totient is φ = 42681600.

The previous prime is 115866787. The next prime is 115866823. The reversal of 115866790 is 97668511.

It is a happy number.

It is a super-2 number, since 2×115866790² = 26850226049808200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77389 + ... + 78871.

It is an arithmetic number, because the mean of its divisors is an integer number (7035273).

Almost surely, 2^115866790 is an apocalyptic number.

115866790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115866790 is a deficient number, since it is larger than the sum of its proper divisors (109261946).

115866790 is a wasteful number, since it uses less digits than its factorization.

115866790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 115866790 is about 10764.1437188473. The cubic root of 115866790 is about 487.5131392470.

The spelling of 115866790 in words is "one hundred fifteen million, eight hundred sixty-six thousand, seven hundred ninety".