115513980 has 96 divisors (see below), whose sum is σ = 344554560. Its totient is φ = 28815360.

The previous prime is 115513973. The next prime is 115513991. The reversal of 115513980 is 89315511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274170 + ... + 274590.

It is an arithmetic number, because the mean of its divisors is an integer number (3589110).

Almost surely, 2^115513980 is an apocalyptic number.

115513980 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 115513980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172277280).

115513980 is an abundant number, since it is smaller than the sum of its proper divisors (229040580).

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

115513980 is a wasteful number, since it uses less digits than its factorization.

115513980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The square root of 115513980 is about 10747.7430188854. The cubic root of 115513980 is about 487.0178164603.

The spelling of 115513980 in words is "one hundred fifteen million, five hundred thirteen thousand, nine hundred eighty".