12949728 has 48 divisors (see below), whose sum is σ = 37086336. Its totient is φ = 3923840.

The previous prime is 12949691. The next prime is 12949787. The reversal of 12949728 is 82794921.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 12949728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5076 + ... + 7187.

It is an arithmetic number, because the mean of its divisors is an integer number (772632).

Almost surely, 2^12949728 is an apocalyptic number.

It is an amenable number.

12949728 is an abundant number, since it is smaller than the sum of its proper divisors (24136608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12949728 is a wasteful number, since it uses less digits than its factorization.

12949728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287 (or 12279 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 12949728 is about 3598.5730505299. The cubic root of 12949728 is about 234.8299841655.

The spelling of 12949728 in words is "twelve million, nine hundred forty-nine thousand, seven hundred twenty-eight".