1280727 has 24 divisors (see below), whose sum is σ = 2190240. Its totient is φ = 705600.

The previous prime is 1280707. The next prime is 1280737. The reversal of 1280727 is 7270821.

It is not a de Polignac number, because 1280727 - 2¹⁰ = 1279703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1280727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280707) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1477 + ... + 2177.

It is an arithmetic number, because the mean of its divisors is an integer number (91260).

2^1280727 is an apocalyptic number.

1280727 is a deficient number, since it is larger than the sum of its proper divisors (909513).

1280727 is a wasteful number, since it uses less digits than its factorization.

1280727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 1280727 is about 1131.6920959342. The cubic root of 1280727 is about 108.5972568317.

The spelling of 1280727 in words is "one million, two hundred eighty thousand, seven hundred twenty-seven".