12728948 has 6 divisors (see below), whose sum is σ = 22275666. Its totient is φ = 6364472.

The previous prime is 12728939. The next prime is 12728977. The reversal of 12728948 is 84982721.

It can be written as a sum of positive squares in only one way, i.e., 12545764 + 183184 = 3542^2 + 428^2 .

It is a super-2 number, since 2×12728948² = 324052234373408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1591115 + ... + 1591122.

It is an arithmetic number, because the mean of its divisors is an integer number (3712611).

Almost surely, 2^12728948 is an apocalyptic number.

It is an amenable number.

12728948 is a deficient number, since it is larger than the sum of its proper divisors (9546718).

12728948 is a wasteful number, since it uses less digits than its factorization.

12728948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182241 (or 3182239 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 12728948 is about 3567.7651267986. The cubic root of 12728948 is about 233.4877879858.

The spelling of 12728948 in words is "twelve million, seven hundred twenty-eight thousand, nine hundred forty-eight".