12832809 has 32 divisors (see below), whose sum is σ = 19944960. Its totient is φ = 7257600.

The previous prime is 12832801. The next prime is 12832811. The reversal of 12832809 is 90823821.

It is not a de Polignac number, because 12832809 - 2³ = 12832801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 12832809.

It is not an unprimeable number, because it can be changed into a prime (12832801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60714 + ... + 60924.

It is an arithmetic number, because the mean of its divisors is an integer number (623280).

Almost surely, 2^12832809 is an apocalyptic number.

12832809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12832809 is a deficient number, since it is larger than the sum of its proper divisors (7112151).

12832809 is a wasteful number, since it uses less digits than its factorization.

12832809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 12832809 is about 3582.2910267034. The cubic root of 12832809 is about 234.1211112410.

The spelling of 12832809 in words is "twelve million, eight hundred thirty-two thousand, eight hundred nine".