115215300 has 108 divisors (see below), whose sum is σ = 363175540. Its totient is φ = 30551040.

The previous prime is 115215241. The next prime is 115215301. The reversal of 115215300 is 3512511.

115215300 is a `hidden beast` number, since 115 + 21 + 530 + 0 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 7096896 + 108118404 = 2664^2 + 10398^2 .

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

It is not an unprimeable number, because it can be changed into a prime (115215301) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 281496 + ... + 281904.

Almost surely, 2^115215300 is an apocalyptic number.

115215300 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 115215300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181587770).

115215300 is an abundant number, since it is smaller than the sum of its proper divisors (247960240).

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

115215300 is a wasteful number, since it uses less digits than its factorization.

115215300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 732 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 115215300 is about 10733.8390150030. The cubic root of 115215300 is about 486.5976998244.

Adding to 115215300 its reverse (3512511), we get a palindrome (118727811).

The spelling of 115215300 in words is "one hundred fifteen million, two hundred fifteen thousand, three hundred".