12470728 has 8 divisors (see below), whose sum is σ = 23382630. Its totient is φ = 6235360.

The previous prime is 12470723. The next prime is 12470729. The reversal of 12470728 is 82707421.

12470728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8398404 + 4072324 = 2898^2 + 2018^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12470728.

It is not an unprimeable number, because it can be changed into a prime (12470723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 779413 + ... + 779428.

Almost surely, 2^12470728 is an apocalyptic number.

It is an amenable number.

12470728 is a deficient number, since it is larger than the sum of its proper divisors (10911902).

12470728 is a wasteful number, since it uses less digits than its factorization.

12470728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558847 (or 1558843 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 12470728 is about 3531.3917936134. The cubic root of 12470728 is about 231.8981419690.

The spelling of 12470728 in words is "twelve million, four hundred seventy thousand, seven hundred twenty-eight".