1280508808 has 16 divisors (see below), whose sum is σ = 2505343680. Its totient is φ = 612417168.

The previous prime is 1280508797. The next prime is 1280508821. The reversal of 1280508808 is 8088050821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3479460 + ... + 3479827.

It is an arithmetic number, because the mean of its divisors is an integer number (156583980).

Almost surely, 2^1280508808 is an apocalyptic number.

It is an amenable number.

1280508808 is a deficient number, since it is larger than the sum of its proper divisors (1224834872).

1280508808 is a wasteful number, since it uses less digits than its factorization.

1280508808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959316 (or 6959312 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 40.

The square root of 1280508808 is about 35784.1977414612. The cubic root of 1280508808 is about 1085.9108939753.

The spelling of 1280508808 in words is "one billion, two hundred eighty million, five hundred eight thousand, eight hundred eight".