1115240440 has 32 divisors (see below), whose sum is σ = 2562684480. Its totient is φ = 436604032.

The previous prime is 1115240411. The next prime is 1115240447. The reversal of 1115240440 is 440425111.

It is a super-2 number, since 2×1115240440² = 2487522478022787200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1115240447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294727 + ... + 298486.

It is an arithmetic number, because the mean of its divisors is an integer number (80083890).

Almost surely, 2^1115240440 is an apocalyptic number.

1115240440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1115240440 is an abundant number, since it is smaller than the sum of its proper divisors (1447444040).

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

1115240440 is a wasteful number, since it uses less digits than its factorization.

1115240440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593271 (or 593267 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1115240440 is about 33395.2158250250. The cubic root of 1115240440 is about 1037.0256609441.

Adding to 1115240440 its reverse (440425111), we get a palindrome (1555665551).

The spelling of 1115240440 in words is "one billion, one hundred fifteen million, two hundred forty thousand, four hundred forty".