115963890 has 48 divisors (see below), whose sum is σ = 323756352. Its totient is φ = 26505696.

The previous prime is 115963879. The next prime is 115963909. The reversal of 115963890 is 98369511.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37974 + ... + 40913.

It is an arithmetic number, because the mean of its divisors is an integer number (6744924).

Almost surely, 2^115963890 is an apocalyptic number.

115963890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115963890 is an abundant number, since it is smaller than the sum of its proper divisors (207792462).

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

115963890 is a wasteful number, since it uses less digits than its factorization.

115963890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78911 (or 78904 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 115963890 is about 10768.6531191231. The cubic root of 115963890 is about 487.6492849839.

The spelling of 115963890 in words is "one hundred fifteen million, nine hundred sixty-three thousand, eight hundred ninety".