12528216 has 64 divisors (see below), whose sum is σ = 35942400. Its totient is φ = 4039200.

The previous prime is 12528211. The next prime is 12528227. The reversal of 12528216 is 61282521.

It is a happy number.

It is a super-2 number, since 2×12528216² = 313912392285312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12528216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12528211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5761 + ... + 7631.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 2^12528216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12528216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17971200).

12528216 is an abundant number, since it is smaller than the sum of its proper divisors (23414184).

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

12528216 is a wasteful number, since it uses less digits than its factorization.

12528216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917 (or 1907 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12528216 is about 3539.5220016268. The cubic root of 12528216 is about 232.2539332150.

The spelling of 12528216 in words is "twelve million, five hundred twenty-eight thousand, two hundred sixteen".