1280327 has 4 divisors (see below), whose sum is σ = 1307616. Its totient is φ = 1253040.

The previous prime is 1280317. The next prime is 1280333. The reversal of 1280327 is 7230821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1280327 - 2¹⁰ = 1279303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13574 + ... + 13667.

It is an arithmetic number, because the mean of its divisors is an integer number (326904).

2^1280327 is an apocalyptic number.

1280327 is a deficient number, since it is larger than the sum of its proper divisors (27289).

1280327 is an equidigital number, since it uses as much as digits as its factorization.

1280327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27288.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1280327 is about 1131.5153556183. The cubic root of 1280327 is about 108.5859498616.

The spelling of 1280327 in words is "one million, two hundred eighty thousand, three hundred twenty-seven".