12273216 has 56 divisors (see below), whose sum is σ = 32857440. Its totient is φ = 4042752.

The previous prime is 12273199. The next prime is 12273223. The reversal of 12273216 is 61237221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18295 + ... + 18953.

It is an arithmetic number, because the mean of its divisors is an integer number (586740).

Almost surely, 2^12273216 is an apocalyptic number.

12273216 is a gapful number since it is divisible by the number (16) 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 12273216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16428720).

12273216 is an abundant number, since it is smaller than the sum of its proper divisors (20584224).

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

12273216 is an equidigital number, since it uses as much as digits as its factorization.

12273216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771 (or 761 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 12273216 is about 3503.3150015378. The cubic root of 12273216 is about 230.6673497628.

The spelling of 12273216 in words is "twelve million, two hundred seventy-three thousand, two hundred sixteen".