1328105 has 4 divisors (see below), whose sum is σ = 1593732. Its totient is φ = 1062480.

The previous prime is 1328101. The next prime is 1328111. The reversal of 1328105 is 5018231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5018231 = 509 ⋅9859.

It can be written as a sum of positive squares in 2 ways, for example, as 369664 + 958441 = 608^2 + 979^2 .

It is not a de Polignac number, because 1328105 - 2² = 1328101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1328101) 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, 132806 + ... + 132815.

It is an arithmetic number, because the mean of its divisors is an integer number (398433).

2^1328105 is an apocalyptic number.

It is an amenable number.

1328105 is a deficient number, since it is larger than the sum of its proper divisors (265627).

1328105 is an equidigital number, since it uses as much as digits as its factorization.

1328105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265626.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1328105 is about 1152.4343799106. The cubic root of 1328105 is about 109.9201900422.

The spelling of 1328105 in words is "one million, three hundred twenty-eight thousand, one hundred five".