115400 has 24 divisors (see below), whose sum is σ = 268770. Its totient is φ = 46080.

The previous prime is 115399. The next prime is 115421. The reversal of 115400 is 4511.

It can be written as a sum of positive squares in 3 ways, for example, as 111556 + 3844 = 334^2 + 62^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89 + ... + 488.

2¹¹⁵⁴⁰⁰ is an apocalyptic number.

115400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115400 is an abundant number, since it is smaller than the sum of its proper divisors (153370).

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

115400 is a wasteful number, since it uses less digits than its factorization.

115400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 115400 is about 339.7057550293. The cubic root of 115400 is about 48.6857580275.

Adding to 115400 its reverse (4511), we get a palindrome (119911).

Subtracting from 115400 its reverse (4511), we obtain a square (110889 = 333²).

It can be divided in two parts, 115 and 400, that added together give a palindrome (515).

The spelling of 115400 in words is "one hundred fifteen thousand, four hundred".