1328743 has 8 divisors (see below), whose sum is σ = 1464848. Its totient is φ = 1197504.

The previous prime is 1328741. The next prime is 1328749. The reversal of 1328743 is 3478231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1328743 - 2¹ = 1328741 is a prime.

It is a Duffinian number.

1328743 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630 + ... + 1747.

It is an arithmetic number, because the mean of its divisors is an integer number (183106).

2^1328743 is an apocalyptic number.

1328743 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1328743 is a deficient number, since it is larger than the sum of its proper divisors (136105).

1328743 is a wasteful number, since it uses less digits than its factorization.

1328743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433.

The product of its digits is 4032, while the sum is 28.

The square root of 1328743 is about 1152.7111520238. The cubic root of 1328743 is about 109.9377885138.

The spelling of 1328743 in words is "one million, three hundred twenty-eight thousand, seven hundred forty-three".