12724282 has 4 divisors (see below), whose sum is σ = 19086426. Its totient is φ = 6362140.

The previous prime is 12724277. The next prime is 12724331. The reversal of 12724282 is 28242721.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12595401 + 128881 = 3549^2 + 359^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12724282.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3181069 + ... + 3181072.

Almost surely, 2^12724282 is an apocalyptic number.

12724282 is a deficient number, since it is larger than the sum of its proper divisors (6362144).

12724282 is an equidigital number, since it uses as much as digits as its factorization.

12724282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6362143.

The product of its digits is 3584, while the sum is 28.

The square root of 12724282 is about 3567.1111561038. Note that the first 4 decimals coincide. The cubic root of 12724282 is about 233.4592549349.

The spelling of 12724282 in words is "twelve million, seven hundred twenty-four thousand, two hundred eighty-two".