1280687552 has 28 divisors (see below), whose sum is σ = 2675122920. Its totient is φ = 606640896.

The previous prime is 1280687539. The next prime is 1280687581. The reversal of 1280687552 is 2557860821.

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, 525383 + ... + 527814.

Almost surely, 2^1280687552 is an apocalyptic number.

It is an amenable number.

1280687552 is an abundant number, since it is smaller than the sum of its proper divisors (1394435368).

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

1280687552 is a wasteful number, since it uses less digits than its factorization.

1280687552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053228 (or 1053218 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 1280687552 is about 35786.6951813101. The cubic root of 1280687552 is about 1085.9614184295.

The spelling of 1280687552 in words is "one billion, two hundred eighty million, six hundred eighty-seven thousand, five hundred fifty-two".