1289344 has 32 divisors (see below), whose sum is σ = 2937600. Its totient is φ = 552192.

The previous prime is 1289341. The next prime is 1289363. The reversal of 1289344 is 4439821.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1289341) 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, 177 + ... + 1615.

It is an arithmetic number, because the mean of its divisors is an integer number (91800).

2^1289344 is an apocalyptic number.

1289344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1289344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1468800).

1289344 is an abundant number, since it is smaller than the sum of its proper divisors (1648256).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1289344 is an equidigital number, since it uses as much as digits as its factorization.

1289344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1448 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 1289344 is about 1135.4928445393. The cubic root of 1289344 is about 108.8402676784.

The spelling of 1289344 in words is "one million, two hundred eighty-nine thousand, three hundred forty-four".