12354220 has 48 divisors (see below), whose sum is σ = 27433728. Its totient is φ = 4664000.

The previous prime is 12354193. The next prime is 12354227. The reversal of 12354220 is 2245321.

It is not an unprimeable number, because it can be changed into a prime (12354227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49095 + ... + 49345.

It is an arithmetic number, because the mean of its divisors is an integer number (571536).

Almost surely, 2^12354220 is an apocalyptic number.

12354220 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 12354220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13716864).

12354220 is an abundant number, since it is smaller than the sum of its proper divisors (15079508).

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

12354220 is a wasteful number, since it uses less digits than its factorization.

12354220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12354220 is about 3514.8570383445. The cubic root of 12354220 is about 231.1737104082.

Adding to 12354220 its reverse (2245321), we get a palindrome (14599541).

The spelling of 12354220 in words is "twelve million, three hundred fifty-four thousand, two hundred twenty".