1268127856 has 20 divisors (see below), whose sum is σ = 2468022592. Its totient is φ = 631218816.

The previous prime is 1268127797. The next prime is 1268127857. The reversal of 1268127856 is 6587218621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268127857) 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, 174141 + ... + 181276.

Almost surely, 2^1268127856 is an apocalyptic number.

1268127856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1268127856 is a deficient number, since it is larger than the sum of its proper divisors (1199894736).

1268127856 is a wasteful number, since it uses less digits than its factorization.

1268127856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355648 (or 355642 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 1268127856 is about 35610.7828613750. The cubic root of 1268127856 is about 1082.3997438739.

The spelling of 1268127856 in words is "one billion, two hundred sixty-eight million, one hundred twenty-seven thousand, eight hundred fifty-six".