1328069 has 4 divisors (see below), whose sum is σ = 1344960. Its totient is φ = 1311180.

The previous prime is 1328051. The next prime is 1328077. The reversal of 1328069 is 9608231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9608231 = 101 ⋅95131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328069 is a prime.

It is a super-2 number, since 2×1328069² = 3527534537522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328099) 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, 8327 + ... + 8484.

It is an arithmetic number, because the mean of its divisors is an integer number (336240).

2^1328069 is an apocalyptic number.

It is an amenable number.

1328069 is a deficient number, since it is larger than the sum of its proper divisors (16891).

1328069 is an equidigital number, since it uses as much as digits as its factorization.

1328069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16890.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1328069 is about 1152.4187606942. The cubic root of 1328069 is about 109.9191968570.

It can be divided in two parts, 13 and 28069, that added together give a palindrome (28082).

The spelling of 1328069 in words is "one million, three hundred twenty-eight thousand, sixty-nine".