1283256 has 64 divisors (see below), whose sum is σ = 3847200. Its totient is φ = 393984.

The previous prime is 1283237. The next prime is 1283297. The reversal of 1283256 is 6523821.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2580 + ... + 3036.

2^1283256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1283256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1923600).

1283256 is an abundant number, since it is smaller than the sum of its proper divisors (2563944).

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

1283256 is a wasteful number, since it uses less digits than its factorization.

1283256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485 (or 475 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1283256 is about 1132.8088982701. The cubic root of 1283256 is about 108.6686907088.

The spelling of 1283256 in words is "one million, two hundred eighty-three thousand, two hundred fifty-six".