12533216 has 24 divisors (see below), whose sum is σ = 26127360. Its totient is φ = 5897728.

The previous prime is 12533203. The next prime is 12533237. The reversal of 12533216 is 61233521.

It is a junction number, because it is equal to n+sod(n) for n = 12533191 and 12533200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10976 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^12533216 is an apocalyptic number.

12533216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12533216 is an abundant number, since it is smaller than the sum of its proper divisors (13594144).

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

12533216 is a wasteful number, since it uses less digits than its factorization.

12533216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23066 (or 23058 counting only the distinct ones).

The product of its digits is 1080, while the sum is 23.

The square root of 12533216 is about 3540.2282412297. The cubic root of 12533216 is about 232.2848265525.

Adding to 12533216 its reverse (61233521), we get a palindrome (73766737).

The spelling of 12533216 in words is "twelve million, five hundred thirty-three thousand, two hundred sixteen".