1280504964 has 24 divisors (see below), whose sum is σ = 2991751840. Its totient is φ = 426276864.

The previous prime is 1280504959. The next prime is 1280504977. The reversal of 1280504964 is 4694050821.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 60154 + ... + 78609.

Almost surely, 2^1280504964 is an apocalyptic number.

It is an amenable number.

1280504964 is an abundant number, since it is smaller than the sum of its proper divisors (1711246876).

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

1280504964 is a wasteful number, since it uses less digits than its factorization.

1280504964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139539 (or 139537 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1280504964 is about 35784.1440305619. The cubic root of 1280504964 is about 1085.9098073641.

The spelling of 1280504964 in words is "one billion, two hundred eighty million, five hundred four thousand, nine hundred sixty-four".