1288544 has 24 divisors (see below), whose sum is σ = 2578968. Its totient is φ = 633600.

The previous prime is 1288543. The next prime is 1288559. The reversal of 1288544 is 4458821.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 1288544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288541) 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, 1844 + ... + 2444.

It is an arithmetic number, because the mean of its divisors is an integer number (107457).

2^1288544 is an apocalyptic number.

It is an amenable number.

1288544 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1288544 is an equidigital number, since it uses as much as digits as its factorization.

1288544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 670 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 1288544 is about 1135.1405199357. The cubic root of 1288544 is about 108.8177522936.

The spelling of 1288544 in words is "one million, two hundred eighty-eight thousand, five hundred forty-four".