12353220 has 144 divisors (see below), whose sum is σ = 43400448. Its totient is φ = 2810880.

The previous prime is 12353213. The next prime is 12353239. The reversal of 12353220 is 2235321.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12353193 and 12353202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33477 + ... + 33843.

It is an arithmetic number, because the mean of its divisors is an integer number (301392).

Almost surely, 2^12353220 is an apocalyptic number.

12353220 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 12353220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21700224).

12353220 is an abundant number, since it is smaller than the sum of its proper divisors (31047228).

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

12353220 is a wasteful number, since it uses less digits than its factorization.

12353220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 12353220 is about 3514.7147821694. The cubic root of 12353220 is about 231.1674728648.

Adding to 12353220 its reverse (2235321), we get a palindrome (14588541).

The spelling of 12353220 in words is "twelve million, three hundred fifty-three thousand, two hundred twenty".