1288287 has 54 divisors (see below), whose sum is σ = 2531256. Its totient is φ = 617760.

The previous prime is 1288249. The next prime is 1288291. The reversal of 1288287 is 7828821.

It is not a de Polignac number, because 1288287 - 2¹¹ = 1286239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288247) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 99093 + ... + 99105.

2^1288287 is an apocalyptic number.

1288287 is a deficient number, since it is larger than the sum of its proper divisors (1242969).

1288287 is a wasteful number, since it uses less digits than its factorization.

1288287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61 (or 34 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The square root of 1288287 is about 1135.0273124467. The cubic root of 1288287 is about 108.8105172485.

The spelling of 1288287 in words is "one million, two hundred eighty-eight thousand, two hundred eighty-seven".