1115261272 has 32 divisors (see below), whose sum is σ = 2110752000. Its totient is φ = 552420000.

The previous prime is 1115261269. The next prime is 1115261299. The reversal of 1115261272 is 2721625111.

It is a self number, because there is not a number n which added to its sum of digits gives 1115261272.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 398197 + ... + 400987.

It is an arithmetic number, because the mean of its divisors is an integer number (65961000).

Almost surely, 2^1115261272 is an apocalyptic number.

It is an amenable number.

1115261272 is a deficient number, since it is larger than the sum of its proper divisors (995490728).

1115261272 is a wasteful number, since it uses less digits than its factorization.

1115261272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3247 (or 3243 counting only the distinct ones).

The product of its digits is 1680, while the sum is 28.

The square root of 1115261272 is about 33395.5277245322. The cubic root of 1115261272 is about 1037.0321179027.

Adding to 1115261272 its reverse (2721625111), we get a palindrome (3836886383).

The spelling of 1115261272 in words is "one billion, one hundred fifteen million, two hundred sixty-one thousand, two hundred seventy-two".