9904224 has 96 divisors (see below), whose sum is σ = 28957824. Its totient is φ = 2938880.

The previous prime is 9904211. The next prime is 9904231. The reversal of 9904224 is 4224099.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 9904191 and 9904200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87592 + ... + 87704.

It is an arithmetic number, because the mean of its divisors is an integer number (301644).

Almost surely, 2^9904224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9904224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14478912).

9904224 is an abundant number, since it is smaller than the sum of its proper divisors (19053600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9904224 is a wasteful number, since it uses less digits than its factorization.

9904224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 9904224 is about 3147.0977105899. The cubic root of 9904224 is about 214.7534509301.

The spelling of 9904224 in words is "nine million, nine hundred four thousand, two hundred twenty-four".