1280308 has 12 divisors (see below), whose sum is σ = 2249632. Its totient is φ = 637560.

The previous prime is 1280297. The next prime is 1280309. The reversal of 1280308 is 8030821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841 + ... + 1807.

2^1280308 is an apocalyptic number.

It is an amenable number.

1280308 is a deficient number, since it is larger than the sum of its proper divisors (969324).

1280308 is a wasteful number, since it uses less digits than its factorization.

1280308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302 (or 1300 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 1280308 is about 1131.5069597665. The cubic root of 1280308 is about 108.5854127219.

The spelling of 1280308 in words is "one million, two hundred eighty thousand, three hundred eight".