115651800 has 360 divisors, whose sum is σ = 448994700. Its totient is φ = 27561600.

The previous prime is 115651769. The next prime is 115651801. The reversal of 115651800 is 8156511.

115651800 is a `hidden beast` number, since 1 + 1 + 5 + 651 + 8 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115651801) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 1960171 + ... + 1960229.

Almost surely, 2^115651800 is an apocalyptic number.

115651800 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 115651800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224497350).

115651800 is an abundant number, since it is smaller than the sum of its proper divisors (333342900).

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

115651800 is a wasteful number, since it uses less digits than its factorization.

115651800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 115651800 is about 10754.1526862882. The cubic root of 115651800 is about 487.2114268474.

The spelling of 115651800 in words is "one hundred fifteen million, six hundred fifty-one thousand, eight hundred".