1280450 has 12 divisors (see below), whose sum is σ = 2381730. Its totient is φ = 512160.

The previous prime is 1280431. The next prime is 1280453. The reversal of 1280450 is 540821.

It can be written as a sum of positive squares in 3 ways, for example, as 1247689 + 32761 = 1117^2 + 181^2 .

It is not an unprimeable number, because it can be changed into a prime (1280453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12755 + ... + 12854.

2^1280450 is an apocalyptic number.

1280450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1280450 is a deficient number, since it is larger than the sum of its proper divisors (1101280).

1280450 is a wasteful number, since it uses less digits than its factorization.

1280450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25621 (or 25616 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1280450 is about 1131.5697062046. The cubic root of 1280450 is about 108.5894270056.

The spelling of 1280450 in words is "one million, two hundred eighty thousand, four hundred fifty".