12741228 has 72 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 3939840.

The previous prime is 12741193. The next prime is 12741233. The reversal of 12741228 is 82214721.

It is a congruent number.

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, 66613 + ... + 66803.

It is an arithmetic number, because the mean of its divisors is an integer number (480480).

Almost surely, 2^12741228 is an apocalyptic number.

12741228 is a gapful number since it is divisible by the number (18) 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 12741228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17297280).

12741228 is an abundant number, since it is smaller than the sum of its proper divisors (21853332).

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

12741228 is a wasteful number, since it uses less digits than its factorization.

12741228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 322 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 12741228 is about 3569.4856772370. The cubic root of 12741228 is about 233.5628480902.

Adding to 12741228 its reverse (82214721), we get a palindrome (94955949).

The spelling of 12741228 in words is "twelve million, seven hundred forty-one thousand, two hundred twenty-eight".