115133400 has 288 divisors, whose sum is σ = 422472960. Its totient is φ = 29082240.

The previous prime is 115133399. The next prime is 115133443. The reversal of 115133400 is 4331511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1117749 + ... + 1117851.

It is an arithmetic number, because the mean of its divisors is an integer number (1466920).

Almost surely, 2^115133400 is an apocalyptic number.

115133400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115133400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211236480).

115133400 is an abundant number, since it is smaller than the sum of its proper divisors (307339560).

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

115133400 is a wasteful number, since it uses less digits than its factorization.

115133400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 115133400 is about 10730.0232991359. The cubic root of 115133400 is about 486.4823742896.

Adding to 115133400 its reverse (4331511), we get a palindrome (119464911).

The spelling of 115133400 in words is "one hundred fifteen million, one hundred thirty-three thousand, four hundred".