1283218 has 8 divisors (see below), whose sum is σ = 1971900. Its totient is φ = 625920.

The previous prime is 1283207. The next prime is 1283237. The reversal of 1283218 is 8123821.

It can be written as a sum of positive squares in 2 ways, for example, as 1026169 + 257049 = 1013^2 + 507^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1283192 and 1283201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7743 + ... + 7906.

2^1283218 is an apocalyptic number.

1283218 is a deficient number, since it is larger than the sum of its proper divisors (688682).

1283218 is a wasteful number, since it uses less digits than its factorization.

1283218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15692.

The product of its digits is 768, while the sum is 25.

The square root of 1283218 is about 1132.7921256788. The cubic root of 1283218 is about 108.6676180595.

The spelling of 1283218 in words is "one million, two hundred eighty-three thousand, two hundred eighteen".