1280807448 has 16 divisors (see below), whose sum is σ = 3202018680. Its totient is φ = 426935808.

The previous prime is 1280807431. The next prime is 1280807449. The reversal of 1280807448 is 8447080821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280807449) 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, 26683465 + ... + 26683512.

Almost surely, 2^1280807448 is an apocalyptic number.

It is an amenable number.

1280807448 is an abundant number, since it is smaller than the sum of its proper divisors (1921211232).

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

1280807448 is a wasteful number, since it uses less digits than its factorization.

1280807448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53366986 (or 53366982 counting only the distinct ones).

The product of its (nonzero) digits is 114688, while the sum is 42.

The square root of 1280807448 is about 35788.3702898022. The cubic root of 1280807448 is about 1085.9953060516.

The spelling of 1280807448 in words is "one billion, two hundred eighty million, eight hundred seven thousand, four hundred forty-eight".