115603488 has 288 divisors, whose sum is σ = 442495872. Its totient is φ = 27648000.

The previous prime is 115603487. The next prime is 115603507. The reversal of 115603488 is 884306511.

115603488 is a `hidden beast` number, since 1 + 1 + 5 + 603 + 48 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×115603488² = 26728332875532288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (115603487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288088 + ... + 288488.

It is an arithmetic number, because the mean of its divisors is an integer number (1536444).

Almost surely, 2^115603488 is an apocalyptic number.

115603488 is a gapful number since it is divisible by the number (18) 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 115603488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221247936).

115603488 is an abundant number, since it is smaller than the sum of its proper divisors (326892384).

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

115603488 is a wasteful number, since it uses less digits than its factorization.

115603488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 115603488 is about 10751.9062495913. The cubic root of 115603488 is about 487.1435753691.

Adding to 115603488 its reverse (884306511), we get a palindrome (999909999).

The spelling of 115603488 in words is "one hundred fifteen million, six hundred three thousand, four hundred eighty-eight".