12026820 has 96 divisors (see below), whose sum is σ = 38441088. Its totient is φ = 2783232.

The previous prime is 12026809. The next prime is 12026827. The reversal of 12026820 is 2862021.

12026820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12026827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12807 + ... + 13713.

It is an arithmetic number, because the mean of its divisors is an integer number (400428).

Almost surely, 2^12026820 is an apocalyptic number.

12026820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12026820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19220544).

12026820 is an abundant number, since it is smaller than the sum of its proper divisors (26414268).

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

12026820 is a wasteful number, since it uses less digits than its factorization.

12026820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 12026820 is about 3467.9705881106. The cubic root of 12026820 is about 229.1132840213.

Adding to 12026820 its reverse (2862021), we get a palindrome (14888841).

The spelling of 12026820 in words is "twelve million, twenty-six thousand, eight hundred twenty".