12228755 has 32 divisors (see below), whose sum is σ = 19104768. Its totient is φ = 7286400.

The previous prime is 12228751. The next prime is 12228767. The reversal of 12228755 is 55782221.

It is a happy number.

12228755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12228755 - 2² = 12228751 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12228751) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8165 + ... + 9545.

It is an arithmetic number, because the mean of its divisors is an integer number (597024).

Almost surely, 2^12228755 is an apocalyptic number.

12228755 is a deficient number, since it is larger than the sum of its proper divisors (6876013).

12228755 is a wasteful number, since it uses less digits than its factorization.

12228755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427.

The product of its digits is 11200, while the sum is 32.

The square root of 12228755 is about 3496.9636829684. The cubic root of 12228755 is about 230.3884739263.

The spelling of 12228755 in words is "twelve million, two hundred twenty-eight thousand, seven hundred fifty-five".