12272738 has 8 divisors (see below), whose sum is σ = 18432732. Its totient is φ = 6128496.

The previous prime is 12272737. The next prime is 12272749. The reversal of 12272738 is 83727221.

It can be written as a sum of positive squares in 2 ways, for example, as 12159169 + 113569 = 3487^2 + 337^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12272737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745 + ... + 5252.

Almost surely, 2^12272738 is an apocalyptic number.

12272738 is a deficient number, since it is larger than the sum of its proper divisors (6159994).

12272738 is an equidigital number, since it uses as much as digits as its factorization.

12272738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7876.

The product of its digits is 9408, while the sum is 32.

The square root of 12272738 is about 3503.2467797744. The cubic root of 12272738 is about 230.6643551545.

Adding to 12272738 its reverse (83727221), we get a palindrome (95999959).

The spelling of 12272738 in words is "twelve million, two hundred seventy-two thousand, seven hundred thirty-eight".