115215800 has 192 divisors, whose sum is σ = 334264320. Its totient is φ = 36034560.

The previous prime is 115215769. The next prime is 115215823. The reversal of 115215800 is 8512511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1118549 + ... + 1118651.

It is an arithmetic number, because the mean of its divisors is an integer number (1740960).

Almost surely, 2^115215800 is an apocalyptic number.

115215800 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 115215800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167132160).

115215800 is an abundant number, since it is smaller than the sum of its proper divisors (219048520).

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

115215800 is a wasteful number, since it uses less digits than its factorization.

115215800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 23.

The square root of 115215800 is about 10733.8623058059. The cubic root of 115215800 is about 486.5984037196.

The spelling of 115215800 in words is "one hundred fifteen million, two hundred fifteen thousand, eight hundred".