115280780 has 24 divisors (see below), whose sum is σ = 242510352. Its totient is φ = 46032192.

The previous prime is 115280741. The next prime is 115280827. The reversal of 115280780 is 87082511.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7559 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (10104598).

Almost surely, 2^115280780 is an apocalyptic number.

115280780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115280780 is an abundant number, since it is smaller than the sum of its proper divisors (127229572).

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

115280780 is a wasteful number, since it uses less digits than its factorization.

115280780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10025 (or 10023 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 32.

The square root of 115280780 is about 10736.8887486087. Note that the first 3 decimals coincide. The cubic root of 115280780 is about 486.6898646184.

The spelling of 115280780 in words is "one hundred fifteen million, two hundred eighty thousand, seven hundred eighty".