12269728 has 12 divisors (see below), whose sum is σ = 24156090. Its totient is φ = 6134848.

The previous prime is 12269717. The next prime is 12269729. The reversal of 12269728 is 82796221.

It can be written as a sum of positive squares in only one way, i.e., 8928144 + 3341584 = 2988^2 + 1828^2 .

It is not an unprimeable number, because it can be changed into a prime (12269729) 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 as a sum of consecutive naturals, namely, 191683 + ... + 191746.

Almost surely, 2^12269728 is an apocalyptic number.

It is an amenable number.

12269728 is a deficient number, since it is larger than the sum of its proper divisors (11886362).

12269728 is an equidigital number, since it uses as much as digits as its factorization.

12269728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383439 (or 383431 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 12269728 is about 3502.8171519507. The cubic root of 12269728 is about 230.6454961061.

The spelling of 12269728 in words is "twelve million, two hundred sixty-nine thousand, seven hundred twenty-eight".