115136880 has 80 divisors (see below), whose sum is σ = 357968160. Its totient is φ = 30613504.

The previous prime is 115136867. The next prime is 115136893. The reversal of 115136880 is 88631511.

It is an interprime number because it is at equal distance from previous prime (115136867) and next prime (115136893).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×115136880² = 26513002272268800, 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, 141916 + ... + 142724.

It is an arithmetic number, because the mean of its divisors is an integer number (4474602).

Almost surely, 2^115136880 is an apocalyptic number.

115136880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115136880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178984080).

115136880 is an abundant number, since it is smaller than the sum of its proper divisors (242831280).

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

115136880 is a wasteful number, since it uses less digits than its factorization.

115136880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 115136880 is about 10730.1854597206. The cubic root of 115136880 is about 486.4872756811.

The spelling of 115136880 in words is "one hundred fifteen million, one hundred thirty-six thousand, eight hundred eighty".