12704289 has 8 divisors (see below), whose sum is σ = 18242112. Its totient is φ = 7818000.

The previous prime is 12704273. The next prime is 12704297. The reversal of 12704289 is 98240721.

It is a happy number.

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

It is not a de Polignac number, because 12704289 - 2⁴ = 12704273 is a prime.

It is a super-2 number, since 2×12704289² = 322797917991042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12704239) 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, 162837 + ... + 162914.

It is an arithmetic number, because the mean of its divisors is an integer number (2280264).

Almost surely, 2^12704289 is an apocalyptic number.

It is an amenable number.

12704289 is a deficient number, since it is larger than the sum of its proper divisors (5537823).

12704289 is a wasteful number, since it uses less digits than its factorization.

12704289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325767.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 12704289 is about 3564.3076466545. The cubic root of 12704289 is about 233.3369167250.

The spelling of 12704289 in words is "twelve million, seven hundred four thousand, two hundred eighty-nine".