12146228 has 12 divisors (see below), whose sum is σ = 22506372. Its totient is φ = 5715840.

The previous prime is 12146221. The next prime is 12146287. The reversal of 12146228 is 82264121.

It is a happy number.

12146228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 2274064 = 3142^2 + 1508^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12146197 and 12146206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12146221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89243 + ... + 89378.

It is an arithmetic number, because the mean of its divisors is an integer number (1875531).

Almost surely, 2^12146228 is an apocalyptic number.

It is an amenable number.

12146228 is a deficient number, since it is larger than the sum of its proper divisors (10360144).

12146228 is a wasteful number, since it uses less digits than its factorization.

12146228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178642 (or 178640 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 12146228 is about 3485.1438994681. The cubic root of 12146228 is about 229.8690369744.

The spelling of 12146228 in words is "twelve million, one hundred forty-six thousand, two hundred twenty-eight".