1283648 has 28 divisors (see below), whose sum is σ = 2633472. Its totient is φ = 620160.

The previous prime is 1283603. The next prime is 1283677. The reversal of 1283648 is 8463821.

It is a Harshad number since it is a multiple of its sum of digits (32).

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, 1661 + ... + 2307.

2^1283648 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 1283648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1316736).

1283648 is an abundant number, since it is smaller than the sum of its proper divisors (1349824).

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

1283648 is an equidigital number, since it uses as much as digits as its factorization.

1283648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 680 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 1283648 is about 1132.9819062986. The cubic root of 1283648 is about 108.6797546976.

The spelling of 1283648 in words is "one million, two hundred eighty-three thousand, six hundred forty-eight".