12304220 has 24 divisors (see below), whose sum is σ = 25982208. Its totient is φ = 4894400.

The previous prime is 12304219. The next prime is 12304261. The reversal of 12304220 is 2240321.

It is a junction number, because it is equal to n+sod(n) for n = 12304195 and 12304204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2210 + ... + 5430.

It is an arithmetic number, because the mean of its divisors is an integer number (1082592).

Almost surely, 2^12304220 is an apocalyptic number.

12304220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12304220 is an abundant number, since it is smaller than the sum of its proper divisors (13677988).

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

12304220 is a wasteful number, since it uses less digits than its factorization.

12304220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3419 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 12304220 is about 3507.7371623313. The cubic root of 12304220 is about 230.8614199759.

Adding to 12304220 its reverse (2240321), we get a palindrome (14544541).

The spelling of 12304220 in words is "twelve million, three hundred four thousand, two hundred twenty".