12226784 has 12 divisors (see below), whose sum is σ = 24071544. Its totient is φ = 6113376.

The previous prime is 12226771. The next prime is 12226787. The reversal of 12226784 is 48762221.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 382087 = 12226784 / (1 + 2 + 2 + 2 + 6 + 7 + 8 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 12226784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191012 + ... + 191075.

It is an arithmetic number, because the mean of its divisors is an integer number (2005962).

Almost surely, 2^12226784 is an apocalyptic number.

It is an amenable number.

12226784 is a deficient number, since it is larger than the sum of its proper divisors (11844760).

12226784 is an equidigital number, since it uses as much as digits as its factorization.

12226784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382097 (or 382089 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 12226784 is about 3496.6818557026. The cubic root of 12226784 is about 230.3760954495.

The spelling of 12226784 in words is "twelve million, two hundred twenty-six thousand, seven hundred eighty-four".