1280085204 has 12 divisors (see below), whose sum is σ = 2986865504. Its totient is φ = 426695064.

The previous prime is 1280085187. The next prime is 1280085229. The reversal of 1280085204 is 4025800821.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 53336872 + ... + 53336895.

Almost surely, 2^1280085204 is an apocalyptic number.

It is an amenable number.

1280085204 is an abundant number, since it is smaller than the sum of its proper divisors (1706780300).

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

1280085204 is a wasteful number, since it uses less digits than its factorization.

1280085204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106673774 (or 106673772 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 1280085204 is about 35778.2783822811. The cubic root of 1280085204 is about 1085.7911376908.

The spelling of 1280085204 in words is "one billion, two hundred eighty million, eighty-five thousand, two hundred four".