12820230 has 48 divisors (see below), whose sum is σ = 33559344. Its totient is φ = 3395520.

The previous prime is 12820229. The next prime is 12820243. The reversal of 12820230 is 3202821.

It is a happy number.

12820230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12820230³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15897 + ... + 16683.

It is an arithmetic number, because the mean of its divisors is an integer number (699153).

Almost surely, 2^12820230 is an apocalyptic number.

12820230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12820230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16779672).

12820230 is an abundant number, since it is smaller than the sum of its proper divisors (20739114).

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

12820230 is a wasteful number, since it uses less digits than its factorization.

12820230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 12820230 is about 3580.5348762441. The cubic root of 12820230 is about 234.0445893551.

The spelling of 12820230 in words is "twelve million, eight hundred twenty thousand, two hundred thirty".