1280346 has 8 divisors (see below), whose sum is σ = 2560704. Its totient is φ = 426780.

The previous prime is 1280333. The next prime is 1280371. The reversal of 1280346 is 6430821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1280346 is an admirable number.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 106690 + ... + 106701.

It is an arithmetic number, because the mean of its divisors is an integer number (320088).

2^1280346 is an apocalyptic number.

1280346 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1280346 is a wasteful number, since it uses less digits than its factorization.

1280346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213396.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1280346 is about 1131.5237514078. The cubic root of 1280346 is about 108.5864869959.

The spelling of 1280346 in words is "one million, two hundred eighty thousand, three hundred forty-six".