12032220 has 48 divisors (see below), whose sum is σ = 35159040. Its totient is φ = 3068736.

The previous prime is 12032213. The next prime is 12032221. The reversal of 12032220 is 2223021.

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 = 12032196 and 12032205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2980 + ... + 5739.

It is an arithmetic number, because the mean of its divisors is an integer number (732480).

Almost surely, 2^12032220 is an apocalyptic number.

12032220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12032220 is an abundant number, since it is smaller than the sum of its proper divisors (23126820).

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

12032220 is a wasteful number, since it uses less digits than its factorization.

12032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754 (or 8752 counting only the distinct ones).

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

The square root of 12032220 is about 3468.7490540539. The cubic root of 12032220 is about 229.1475692442.

Adding to 12032220 its reverse (2223021), we get a palindrome (14255241).

The spelling of 12032220 in words is "twelve million, thirty-two thousand, two hundred twenty".