12303728 has 10 divisors (see below), whose sum is σ = 23838504. Its totient is φ = 6151856.

The previous prime is 12303727. The next prime is 12303751. The reversal of 12303728 is 82730321.

It is a junction number, because it is equal to n+sod(n) for n = 12303697 and 12303706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 384476 + ... + 384507.

Almost surely, 2^12303728 is an apocalyptic number.

It is an amenable number.

12303728 is a deficient number, since it is larger than the sum of its proper divisors (11534776).

12303728 is an equidigital number, since it uses as much as digits as its factorization.

12303728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768991 (or 768985 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 12303728 is about 3507.6670309481. The cubic root of 12303728 is about 230.8583428383.

It can be divided in two parts, 12303 and 728, that added together give a palindrome (13031).

The spelling of 12303728 in words is "twelve million, three hundred three thousand, seven hundred twenty-eight".