1283656 has 32 divisors (see below), whose sum is σ = 2721600. Its totient is φ = 562240.

The previous prime is 1283603. The next prime is 1283677. The reversal of 1283656 is 6563821.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2301 + ... + 2803.

It is an arithmetic number, because the mean of its divisors is an integer number (85050).

2^1283656 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 1283656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360800).

1283656 is an abundant number, since it is smaller than the sum of its proper divisors (1437944).

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

1283656 is a wasteful number, since it uses less digits than its factorization.

1283656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549 (or 545 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 1283656 is about 1132.9854367996. The cubic root of 1283656 is about 108.6799804698.

The spelling of 1283656 in words is "one million, two hundred eighty-three thousand, six hundred fifty-six".