1288086856 has 16 divisors (see below), whose sum is σ = 2760186240. Its totient is φ = 552037200.

The previous prime is 1288086853. The next prime is 1288086857. The reversal of 1288086856 is 6586808821.

It is not an unprimeable number, because it can be changed into a prime (1288086853) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11500720 + ... + 11500831.

It is an arithmetic number, because the mean of its divisors is an integer number (172511640).

Almost surely, 2^1288086856 is an apocalyptic number.

It is an amenable number.

1288086856 is an abundant number, since it is smaller than the sum of its proper divisors (1472099384).

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

1288086856 is a wasteful number, since it uses less digits than its factorization.

1288086856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23001564 (or 23001560 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 52.

The square root of 1288086856 is about 35889.9269433639. The cubic root of 1288086856 is about 1088.0488214287.

The spelling of 1288086856 in words is "one billion, two hundred eighty-eight million, eighty-six thousand, eight hundred fifty-six".