1280344 has 24 divisors (see below), whose sum is σ = 2602260. Its totient is φ = 590304.

The previous prime is 1280333. The next prime is 1280371. The reversal of 1280344 is 4430821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 879 + ... + 1825.

2^1280344 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 1280344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1301130).

1280344 is an abundant number, since it is smaller than the sum of its proper divisors (1321916).

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

1280344 is a wasteful number, since it uses less digits than its factorization.

1280344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 979 (or 962 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1280344 is about 1131.5228676434. The cubic root of 1280344 is about 108.5864304557.

The spelling of 1280344 in words is "one million, two hundred eighty thousand, three hundred forty-four".