1115628788 has 12 divisors (see below), whose sum is σ = 1953031332. Its totient is φ = 557619840.

The previous prime is 1115628779. The next prime is 1115628793. The reversal of 1115628788 is 8878265111.

It can be written as a sum of positive squares in 2 ways, for example, as 674544784 + 441084004 = 25972^2 + 21002^2 .

It is a super-2 number, since 2×1115628788² = 2489255185228697888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35333 + ... + 58988.

It is an arithmetic number, because the mean of its divisors is an integer number (162752611).

Almost surely, 2^1115628788 is an apocalyptic number.

It is an amenable number.

1115628788 is a deficient number, since it is larger than the sum of its proper divisors (837402544).

1115628788 is a wasteful number, since it uses less digits than its factorization.

1115628788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97282 (or 97280 counting only the distinct ones).

The product of its digits is 215040, while the sum is 47.

The square root of 1115628788 is about 33401.0297446052. The cubic root of 1115628788 is about 1037.1460176822.

The spelling of 1115628788 in words is "one billion, one hundred fifteen million, six hundred twenty-eight thousand, seven hundred eighty-eight".