1115253300 has 144 divisors (see below), whose sum is σ = 3778008192. Its totient is φ = 248678400.

The previous prime is 1115253283. The next prime is 1115253311. The reversal of 1115253300 is 33525111.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 79624 + ... + 92576.

It is an arithmetic number, because the mean of its divisors is an integer number (26236168).

Almost surely, 2^1115253300 is an apocalyptic number.

1115253300 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 1115253300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1889004096).

1115253300 is an abundant number, since it is smaller than the sum of its proper divisors (2662754892).

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

1115253300 is a wasteful number, since it uses less digits than its factorization.

1115253300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13018 (or 13011 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1115253300 is about 33395.4083670196. The cubic root of 1115253300 is about 1037.0296469601.

Adding to 1115253300 its reverse (33525111), we get a palindrome (1148778411).

The spelling of 1115253300 in words is "one billion, one hundred fifteen million, two hundred fifty-three thousand, three hundred".