115415780 has 12 divisors (see below), whose sum is σ = 242373180. Its totient is φ = 46166304.

The previous prime is 115415777. The next prime is 115415789. The reversal of 115415780 is 87514511.

It can be written as a sum of positive squares in 2 ways, for example, as 74787904 + 40627876 = 8648^2 + 6374^2 .

It is not an unprimeable number, because it can be changed into a prime (115415789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2885375 + ... + 2885414.

It is an arithmetic number, because the mean of its divisors is an integer number (20197765).

Almost surely, 2^115415780 is an apocalyptic number.

115415780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115415780 is an abundant number, since it is smaller than the sum of its proper divisors (126957400).

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

115415780 is a wasteful number, since it uses less digits than its factorization.

115415780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770798 (or 5770796 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 32.

The square root of 115415780 is about 10743.1736465534. The cubic root of 115415780 is about 486.8797705192.

The spelling of 115415780 in words is "one hundred fifteen million, four hundred fifteen thousand, seven hundred eighty".