1328811 has 16 divisors (see below), whose sum is σ = 1964928. Its totient is φ = 792000.

The previous prime is 1328807. The next prime is 1328827. The reversal of 1328811 is 1188231.

It is not a de Polignac number, because 1328811 - 2² = 1328807 is a prime.

1328811 is a lucky number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1328861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1911 + ... + 2511.

It is an arithmetic number, because the mean of its divisors is an integer number (122808).

2^1328811 is an apocalyptic number.

1328811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1328811 is a deficient number, since it is larger than the sum of its proper divisors (636117).

1328811 is a wasteful number, since it uses less digits than its factorization.

1328811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its digits is 384, while the sum is 24.

The square root of 1328811 is about 1152.7406473271. The cubic root of 1328811 is about 109.9396638808.

The spelling of 1328811 in words is "one million, three hundred twenty-eight thousand, eight hundred eleven".