12453320 has 96 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 4329600.

The previous prime is 12453319. The next prime is 12453347. The reversal of 12453320 is 2335421.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12453292 and 12453301.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 149999 + ... + 150081.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^12453320 is an apocalyptic number.

12453320 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 12453320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16087680).

12453320 is an abundant number, since it is smaller than the sum of its proper divisors (19722040).

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

12453320 is a wasteful number, since it uses less digits than its factorization.

12453320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12453320 is about 3528.9261822827. The cubic root of 12453320 is about 231.7901888303.

Adding to 12453320 its reverse (2335421), we get a palindrome (14788741).

The spelling of 12453320 in words is "twelve million, four hundred fifty-three thousand, three hundred twenty".