12302220 has 96 divisors (see below), whose sum is σ = 41707008. Its totient is φ = 2644992.

The previous prime is 12302209. The next prime is 12302221. The reversal of 12302220 is 2220321.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 12302196 and 12302205.

It is not an unprimeable number, because it can be changed into a prime (12302221) 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, 6279 + ... + 8001.

It is an arithmetic number, because the mean of its divisors is an integer number (434448).

Almost surely, 2^12302220 is an apocalyptic number.

12302220 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 12302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20853504).

12302220 is an abundant number, since it is smaller than the sum of its proper divisors (29404788).

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

12302220 is a wasteful number, since it uses less digits than its factorization.

12302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 12302220 is about 3507.4520666718. The cubic root of 12302220 is about 230.8489107755.

Adding to 12302220 its reverse (2220321), we get a palindrome (14522541).

The spelling of 12302220 in words is "twelve million, three hundred two thousand, two hundred twenty".