12647128 has 16 divisors (see below), whose sum is σ = 25537680. Its totient is φ = 5837088.

The previous prime is 12647113. The next prime is 12647143. The reversal of 12647128 is 82174621.

12647128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12647113) and next prime (12647143).

It is a self number, because there is not a number n which added to its sum of digits gives 12647128.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60700 + ... + 60907.

It is an arithmetic number, because the mean of its divisors is an integer number (1596105).

Almost surely, 2^12647128 is an apocalyptic number.

It is an amenable number.

12647128 is an abundant number, since it is smaller than the sum of its proper divisors (12890552).

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

12647128 is a wasteful number, since it uses less digits than its factorization.

12647128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121626 (or 121622 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 12647128 is about 3556.2800789589. The cubic root of 12647128 is about 232.9864359962.

It can be divided in two parts, 1 and 2647128, that added together give a square (2647129 = 1627²).

The spelling of 12647128 in words is "twelve million, six hundred forty-seven thousand, one hundred twenty-eight".