1128260815 has 8 divisors (see below), whose sum is σ = 1476996048. Its totient is φ = 820553280.

The previous prime is 1128260801. The next prime is 1128260849. The reversal of 1128260815 is 5180628211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1128260815 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10256862 + ... + 10256971.

It is an arithmetic number, because the mean of its divisors is an integer number (184624506).

Almost surely, 2^1128260815 is an apocalyptic number.

1128260815 is a deficient number, since it is larger than the sum of its proper divisors (348735233).

1128260815 is a wasteful number, since it uses less digits than its factorization.

1128260815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20513849.

The product of its (nonzero) digits is 7680, while the sum is 34.

The square root of 1128260815 is about 33589.5938498815. The cubic root of 1128260815 is about 1041.0457968258.

The spelling of 1128260815 in words is "one billion, one hundred twenty-eight million, two hundred sixty thousand, eight hundred fifteen".