9947228 has 12 divisors (see below), whose sum is σ = 17878392. Its totient is φ = 4839120.

The previous prime is 9947219. The next prime is 9947237. The reversal of 9947228 is 8227499.

9947228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9947219) and next prime (9947237).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33458 + ... + 33753.

It is an arithmetic number, because the mean of its divisors is an integer number (1489866).

Almost surely, 2^9947228 is an apocalyptic number.

It is an amenable number.

9947228 is a deficient number, since it is larger than the sum of its proper divisors (7931164).

9947228 is a wasteful number, since it uses less digits than its factorization.

9947228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67252 (or 67250 counting only the distinct ones).

The product of its digits is 72576, while the sum is 41.

The square root of 9947228 is about 3153.9226369713. The cubic root of 9947228 is about 215.0638209669.

The spelling of 9947228 in words is "nine million, nine hundred forty-seven thousand, two hundred twenty-eight".