9984520 has 96 divisors (see below), whose sum is σ = 27933120. Its totient is φ = 3144960.

The previous prime is 9984493. The next prime is 9984521. The reversal of 9984520 is 254899.

It is a self number, because there is not a number n which added to its sum of digits gives 9984520.

It is not an unprimeable number, because it can be changed into a prime (9984521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47215 + ... + 47425.

It is an arithmetic number, because the mean of its divisors is an integer number (290970).

Almost surely, 2^9984520 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 9984520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13966560).

9984520 is an abundant number, since it is smaller than the sum of its proper divisors (17948600).

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

9984520 is a wasteful number, since it uses less digits than its factorization.

9984520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 9984520 is about 3159.8291093032. The cubic root of 9984520 is about 215.3322427607.

The spelling of 9984520 in words is "nine million, nine hundred eighty-four thousand, five hundred twenty".