12210828 has 72 divisors (see below), whose sum is σ = 34659072. Its totient is φ = 3277056.

The previous prime is 12210823. The next prime is 12210853. The reversal of 12210828 is 82801221.

It is a junction number, because it is equal to n+sod(n) for n = 12210798 and 12210807.

It is not an unprimeable number, because it can be changed into a prime (12210823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24025 + ... + 24527.

It is an arithmetic number, because the mean of its divisors is an integer number (481376).

Almost surely, 2^12210828 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 12210828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17329536).

12210828 is an abundant number, since it is smaller than the sum of its proper divisors (22448244).

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

12210828 is a wasteful number, since it uses less digits than its factorization.

12210828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551 (or 532 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 12210828 is about 3494.3995192307. The cubic root of 12210828 is about 230.2758379287.

The spelling of 12210828 in words is "twelve million, two hundred ten thousand, eight hundred twenty-eight".