9978224 has 20 divisors (see below), whose sum is σ = 19599936. Its totient is φ = 4920192.

The previous prime is 9978223. The next prime is 9978229. The reversal of 9978224 is 4228799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9978223) 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, 3104 + ... + 5439.

Almost surely, 2^9978224 is an apocalyptic number.

It is an amenable number.

9978224 is a deficient number, since it is larger than the sum of its proper divisors (9621712).

9978224 is a wasteful number, since it uses less digits than its factorization.

9978224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8624 (or 8618 counting only the distinct ones).

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

The square root of 9978224 is about 3158.8326957913. The cubic root of 9978224 is about 215.2869721196.

The spelling of 9978224 in words is "nine million, nine hundred seventy-eight thousand, two hundred twenty-four".