1328741 has 2 divisors, whose sum is σ = 1328742. Its totient is φ = 1328740.

The previous prime is 1328731. The next prime is 1328749. The reversal of 1328741 is 1478231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1322500 + 6241 = 1150^2 + 79^2 .

It is an emirp because it is prime and its reverse (1478231) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328741 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1328749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664370 + 664371.

It is an arithmetic number, because the mean of its divisors is an integer number (664371).

2^1328741 is an apocalyptic number.

It is an amenable number.

1328741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1328741 is an equidigital number, since it uses as much as digits as its factorization.

1328741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 26.

The square root of 1328741 is about 1152.7102845034. The cubic root of 1328741 is about 109.9377333550.

The spelling of 1328741 in words is "one million, three hundred twenty-eight thousand, seven hundred forty-one".