12210528 has 96 divisors (see below), whose sum is σ = 36191232. Its totient is φ = 3571200.

The previous prime is 12210503. The next prime is 12210563. The reversal of 12210528 is 82501221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32550 + ... + 32922.

It is an arithmetic number, because the mean of its divisors is an integer number (376992).

Almost surely, 2^12210528 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 12210528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18095616).

12210528 is an abundant number, since it is smaller than the sum of its proper divisors (23980704).

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

12210528 is a wasteful number, since it uses less digits than its factorization.

12210528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 12210528 is about 3494.3565931370. The cubic root of 12210528 is about 230.2739520801.

Adding to 12210528 its reverse (82501221), we get a palindrome (94711749).

The spelling of 12210528 in words is "twelve million, two hundred ten thousand, five hundred twenty-eight".