1288371 has 16 divisors (see below), whose sum is σ = 2067200. Its totient is φ = 697248.

The previous prime is 1288367. The next prime is 1288393. The reversal of 1288371 is 1738821.

It is a happy number.

It is not a de Polignac number, because 1288371 - 2² = 1288367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1216 + ... + 2013.

It is an arithmetic number, because the mean of its divisors is an integer number (129200).

2^1288371 is an apocalyptic number.

1288371 is a deficient number, since it is larger than the sum of its proper divisors (778829).

1288371 is a wasteful number, since it uses less digits than its factorization.

1288371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258.

The product of its digits is 2688, while the sum is 30.

The square root of 1288371 is about 1135.0643153584. The cubic root of 1288371 is about 108.8128821162.

The spelling of 1288371 in words is "one million, two hundred eighty-eight thousand, three hundred seventy-one".