12258220 has 24 divisors (see below), whose sum is σ = 27723024. Its totient is φ = 4526016.

The previous prime is 12258217. The next prime is 12258229. The reversal of 12258220 is 2285221.

It is a junction number, because it is equal to n+sod(n) for n = 12258191 and 12258200.

It is not an unprimeable number, because it can be changed into a prime (12258229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23314 + ... + 23833.

It is an arithmetic number, because the mean of its divisors is an integer number (1155126).

Almost surely, 2^12258220 is an apocalyptic number.

12258220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12258220 is an abundant number, since it is smaller than the sum of its proper divisors (15464804).

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

12258220 is a wasteful number, since it uses less digits than its factorization.

12258220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47169 (or 47167 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 12258220 is about 3501.1740887879. The cubic root of 12258220 is about 230.5733646883.

The spelling of 12258220 in words is "twelve million, two hundred fifty-eight thousand, two hundred twenty".