12743216 has 10 divisors (see below), whose sum is σ = 24690012. Its totient is φ = 6371600.

The previous prime is 12743197. The next prime is 12743221. The reversal of 12743216 is 61234721.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398210 + ... + 398241.

Almost surely, 2^12743216 is an apocalyptic number.

12743216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12743216 is a deficient number, since it is larger than the sum of its proper divisors (11946796).

12743216 is an equidigital number, since it uses as much as digits as its factorization.

12743216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796459 (or 796453 counting only the distinct ones).

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

The square root of 12743216 is about 3569.7641378668. The cubic root of 12743216 is about 233.5749949779.

Adding to 12743216 its reverse (61234721), we get a palindrome (73977937).

The spelling of 12743216 in words is "twelve million, seven hundred forty-three thousand, two hundred sixteen".