115840400 has 60 divisors (see below), whose sum is σ = 299728212. Its totient is φ = 42769920.

The previous prime is 115840391. The next prime is 115840411. The reversal of 115840400 is 4048511.

It can be written as a sum of positive squares in 6 ways, for example, as 2715904 + 113124496 = 1648^2 + 10636^2 .

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, 5939 + ... + 16338.

Almost surely, 2^115840400 is an apocalyptic number.

115840400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115840400 is an abundant number, since it is smaller than the sum of its proper divisors (183887812).

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

115840400 is a wasteful number, since it uses less digits than its factorization.

115840400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22308 (or 22297 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 115840400 is about 10762.9178199966. The cubic root of 115840400 is about 487.4761241868.

Adding to 115840400 its reverse (4048511), we get a palindrome (119888911).

The spelling of 115840400 in words is "one hundred fifteen million, eight hundred forty thousand, four hundred".