1280322 has 12 divisors (see below), whose sum is σ = 2774070. Its totient is φ = 426768.

The previous prime is 1280317. The next prime is 1280333. The reversal of 1280322 is 2230821.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1212201 + 68121 = 1101^2 + 261^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 71129 = 1280322 / (1 + 2 + 8 + 0 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 1280295 and 1280304.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35547 + ... + 35582.

2^1280322 is an apocalyptic number.

1280322 is an abundant number, since it is smaller than the sum of its proper divisors (1493748).

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

1280322 is a wasteful number, since it uses less digits than its factorization.

1280322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71137 (or 71134 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1280322 is about 1131.5131461896. The cubic root of 1280322 is about 108.5858085095.

The spelling of 1280322 in words is "one million, two hundred eighty thousand, three hundred twenty-two".