1291344 has 20 divisors (see below), whose sum is σ = 3336096. Its totient is φ = 430432.

The previous prime is 1291343. The next prime is 1291349. The reversal of 1291344 is 4431921.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 1 + 2 + 9² + 1 + 3¹¹ + 4⁸ + 4¹⁰ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291343) 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, 13404 + ... + 13499.

2^1291344 is an apocalyptic number.

It is an amenable number.

1291344 is an abundant number, since it is smaller than the sum of its proper divisors (2044752).

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

1291344 is a wasteful number, since it uses less digits than its factorization.

1291344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26914 (or 26908 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 1291344 is about 1136.3731781418. The cubic root of 1291344 is about 108.8965154237.

The spelling of 1291344 in words is "one million, two hundred ninety-one thousand, three hundred forty-four".