1280847 has 16 divisors (see below), whose sum is σ = 1877760. Its totient is φ = 772992.

The previous prime is 1280837. The next prime is 1280857. The reversal of 1280847 is 7480821.

It is an interprime number because it is at equal distance from previous prime (1280837) and next prime (1280857).

It is not a de Polignac number, because 1280847 - 2¹⁰ = 1279823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (117360).

2^1280847 is an apocalyptic number.

1280847 is a deficient number, since it is larger than the sum of its proper divisors (596913).

1280847 is a wasteful number, since it uses less digits than its factorization.

1280847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022.

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 1280847 is about 1131.7451126468. The cubic root of 1280847 is about 108.6006484636.

The spelling of 1280847 in words is "one million, two hundred eighty thousand, eight hundred forty-seven".