115821384 has 64 divisors (see below), whose sum is σ = 333901440. Its totient is φ = 32793600.

The previous prime is 115821373. The next prime is 115821427. The reversal of 115821384 is 483128511.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15934 + ... + 22034.

It is an arithmetic number, because the mean of its divisors is an integer number (5217210).

Almost surely, 2^115821384 is an apocalyptic number.

115821384 is a gapful number since it is divisible by the number (14) 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 115821384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166950720).

115821384 is an abundant number, since it is smaller than the sum of its proper divisors (218080056).

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

115821384 is a wasteful number, since it uses less digits than its factorization.

115821384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6230 (or 6226 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 115821384 is about 10762.0343801718. The cubic root of 115821384 is about 487.4494485386.

Adding to 115821384 its reverse (483128511), we get a palindrome (598949895).

The spelling of 115821384 in words is "one hundred fifteen million, eight hundred twenty-one thousand, three hundred eighty-four".