12030820 has 12 divisors (see below), whose sum is σ = 25264764. Its totient is φ = 4812320.

The previous prime is 12030793. The next prime is 12030833. The reversal of 12030820 is 2803021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2196324 + 9834496 = 1482^2 + 3136^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12030794 and 12030803.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 300751 + ... + 300790.

It is an arithmetic number, because the mean of its divisors is an integer number (2105397).

Almost surely, 2^12030820 is an apocalyptic number.

12030820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12030820 is an abundant number, since it is smaller than the sum of its proper divisors (13233944).

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

12030820 is a wasteful number, since it uses less digits than its factorization.

12030820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601550 (or 601548 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 12030820 is about 3468.5472463266. The cubic root of 12030820 is about 229.1386814679.

Adding to 12030820 its reverse (2803021), we get a palindrome (14833841).

The spelling of 12030820 in words is "twelve million, thirty thousand, eight hundred twenty".