1115889600 has 168 divisors, whose sum is σ = 4184180608. Its totient is φ = 255052800.

The previous prime is 1115889587. The next prime is 1115889641. The reversal of 1115889600 is 69885111.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16995 + ... + 50205.

Almost surely, 2^1115889600 is an apocalyptic number.

1115889600 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 1115889600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2092090304).

1115889600 is an abundant number, since it is smaller than the sum of its proper divisors (3068291008).

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

1115889600 is a wasteful number, since it uses less digits than its factorization.

1115889600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33243 (or 33228 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 39.

The square root of 1115889600 is about 33404.9337673344. The cubic root of 1115889600 is about 1037.2268328105.

The spelling of 1115889600 in words is "one billion, one hundred fifteen million, eight hundred eighty-nine thousand, six hundred".