9923280 has 80 divisors (see below), whose sum is σ = 31069440. Its totient is φ = 2619904.

The previous prime is 9923279. The next prime is 9923299. The reversal of 9923280 is 823299.

9923280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

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, 41401 + ... + 41639.

It is an arithmetic number, because the mean of its divisors is an integer number (388368).

Almost surely, 2^9923280 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 9923280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15534720).

9923280 is an abundant number, since it is smaller than the sum of its proper divisors (21146160).

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

9923280 is a wasteful number, since it uses less digits than its factorization.

9923280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 9923280 is about 3150.1238070908. The cubic root of 9923280 is about 214.8910932118.

The spelling of 9923280 in words is "nine million, nine hundred twenty-three thousand, two hundred eighty".