115739280 has 200 divisors, whose sum is σ = 410779512. Its totient is φ = 30191616.

The previous prime is 115739257. The next prime is 115739311. The reversal of 115739280 is 82937511.

115739280 is a `hidden beast` number, since 1 + 1 + 573 + 9 + 2 + 80 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11209104 + 104530176 = 3348^2 + 10224^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 343272 + ... + 343608.

Almost surely, 2^115739280 is an apocalyptic number.

115739280 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 115739280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205389756).

115739280 is an abundant number, since it is smaller than the sum of its proper divisors (295040232).

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

115739280 is a wasteful number, since it uses less digits than its factorization.

115739280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 115739280 is about 10758.2191834894. The cubic root of 115739280 is about 487.3342395022.

The spelling of 115739280 in words is "one hundred fifteen million, seven hundred thirty-nine thousand, two hundred eighty".