12947528 has 32 divisors (see below), whose sum is σ = 27639360. Its totient is φ = 5628480.

The previous prime is 12947527. The next prime is 12947563. The reversal of 12947528 is 82574921.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 12947491 and 12947500.

It is not an unprimeable number, because it can be changed into a prime (12947527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 5222.

It is an arithmetic number, because the mean of its divisors is an integer number (863730).

Almost surely, 2^12947528 is an apocalyptic number.

It is an amenable number.

12947528 is an abundant number, since it is smaller than the sum of its proper divisors (14691832).

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

12947528 is a wasteful number, since it uses less digits than its factorization.

12947528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437 (or 6433 counting only the distinct ones).

The product of its digits is 40320, while the sum is 38.

The square root of 12947528 is about 3598.2673608280. The cubic root of 12947528 is about 234.8166851674.

The spelling of 12947528 in words is "twelve million, nine hundred forty-seven thousand, five hundred twenty-eight".