115409380 has 12 divisors (see below), whose sum is σ = 242359740. Its totient is φ = 46163744.

The previous prime is 115409351. The next prime is 115409419. The reversal of 115409380 is 83904511.

It can be written as a sum of positive squares in 2 ways, for example, as 17438976 + 97970404 = 4176^2 + 9898^2 .

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 3 ways as a sum of consecutive naturals, for example, 2885215 + ... + 2885254.

It is an arithmetic number, because the mean of its divisors is an integer number (20196645).

Almost surely, 2^115409380 is an apocalyptic number.

115409380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115409380 is an abundant number, since it is smaller than the sum of its proper divisors (126950360).

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

115409380 is a wasteful number, since it uses less digits than its factorization.

115409380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5770478 (or 5770476 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 115409380 is about 10742.8757788592. The cubic root of 115409380 is about 486.8707709175.

The spelling of 115409380 in words is "one hundred fifteen million, four hundred nine thousand, three hundred eighty".