115980840 has 48 divisors (see below), whose sum is σ = 376938900. Its totient is φ = 30928128.

The previous prime is 115980833. The next prime is 115980853. The reversal of 115980840 is 48089511.

It can be written as a sum of positive squares in 2 ways, for example, as 114190596 + 1790244 = 10686^2 + 1338^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 115980795 and 115980804.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160725 + ... + 161444.

Almost surely, 2^115980840 is an apocalyptic number.

115980840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115980840 is an abundant number, since it is smaller than the sum of its proper divisors (260958060).

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

115980840 is a wasteful number, since it uses less digits than its factorization.

115980840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322186 (or 322179 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 115980840 is about 10769.4400968667. The cubic root of 115980840 is about 487.6730431058.

The spelling of 115980840 in words is "one hundred fifteen million, nine hundred eighty thousand, eight hundred forty".