1281008 has 30 divisors (see below), whose sum is σ = 2634504. Its totient is φ = 602272.

The previous prime is 1280989. The next prime is 1281029. The reversal of 1281008 is 8001821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21683 + ... + 21741.

2^1281008 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 1281008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317252).

1281008 is an abundant number, since it is smaller than the sum of its proper divisors (1353496).

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

1281008 is an equidigital number, since it uses as much as digits as its factorization.

1281008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1281008 is about 1131.8162395018. The cubic root of 1281008 is about 108.6051985704.

Adding to 1281008 its reverse (8001821), we get a palindrome (9282829).

The spelling of 1281008 in words is "one million, two hundred eighty-one thousand, eight".