1115002240 has 128 divisors (see below), whose sum is σ = 2924087040. Its totient is φ = 403200000.

The previous prime is 1115002199. The next prime is 1115002241. The reversal of 1115002240 is 422005111.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115002241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1766725 + ... + 1767355.

It is an arithmetic number, because the mean of its divisors is an integer number (22844430).

Almost surely, 2^1115002240 is an apocalyptic number.

1115002240 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 1115002240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1462043520).

1115002240 is an abundant number, since it is smaller than the sum of its proper divisors (1809084800).

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

1115002240 is a wasteful number, since it uses less digits than its factorization.

1115002240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 900 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1115002240 is about 33391.6492554651. The cubic root of 1115002240 is about 1036.9518242203.

Adding to 1115002240 its reverse (422005111), we get a palindrome (1537007351).

The spelling of 1115002240 in words is "one billion, one hundred fifteen million, two thousand, two hundred forty".