12828385 has 8 divisors (see below), whose sum is σ = 15684840. Its totient is φ = 10068864.

The previous prime is 12828377. The next prime is 12828407. The reversal of 12828385 is 58382821.

It can be written as a sum of positive squares in 4 ways, for example, as 6796449 + 6031936 = 2607^2 + 2456^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 12828385 - 2³ = 12828377 is a prime.

It is a super-3 number, since 3×12828385³ (a number of 22 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23940 + ... + 24469.

It is an arithmetic number, because the mean of its divisors is an integer number (1960605).

Almost surely, 2^12828385 is an apocalyptic number.

It is an amenable number.

12828385 is a deficient number, since it is larger than the sum of its proper divisors (2856455).

12828385 is an equidigital number, since it uses as much as digits as its factorization.

12828385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48467.

The product of its digits is 30720, while the sum is 37.

The square root of 12828385 is about 3581.6734915400. The cubic root of 12828385 is about 234.0942044055.

The spelling of 12828385 in words is "twelve million, eight hundred twenty-eight thousand, three hundred eighty-five".