12453516 has 72 divisors (see below), whose sum is σ = 32904144. Its totient is φ = 3968640.

The previous prime is 12453509. The next prime is 12453523. The reversal of 12453516 is 61535421.

12453516 is a `hidden beast` number, since 124 + 535 + 1 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (12453509) and next prime (12453523).

It is a self number, because there is not a number n which added to its sum of digits gives 12453516.

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, 116335 + ... + 116441.

It is an arithmetic number, because the mean of its divisors is an integer number (457002).

Almost surely, 2^12453516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12453516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16452072).

12453516 is an abundant number, since it is smaller than the sum of its proper divisors (20450628).

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

12453516 is a wasteful number, since it uses less digits than its factorization.

12453516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231 (or 226 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 12453516 is about 3528.9539526608. The cubic root of 12453516 is about 231.7914048551.

Adding to 12453516 its reverse (61535421), we get a palindrome (73988937).

It can be divided in two parts, 1245 and 3516, that added together give a square (4761 = 69²).

The spelling of 12453516 in words is "twelve million, four hundred fifty-three thousand, five hundred sixteen".