7147228 has 18 divisors (see below), whose sum is σ = 13749008. Its totient is φ = 3248520.

The previous prime is 7147223. The next prime is 7147237. The reversal of 7147228 is 8227417.

It is a self number, because there is not a number n which added to its sum of digits gives 7147228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7147223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6900 + ... + 7867.

Almost surely, 2^7147228 is an apocalyptic number.

It is an amenable number.

7147228 is a deficient number, since it is larger than the sum of its proper divisors (6601780).

7147228 is a wasteful number, since it uses less digits than its factorization.

7147228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14793 (or 14780 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 7147228 is about 2673.4300065646. The cubic root of 7147228 is about 192.6249528884.

The spelling of 7147228 in words is "seven million, one hundred forty-seven thousand, two hundred twenty-eight".