9930144 has 72 divisors (see below), whose sum is σ = 30336768. Its totient is φ = 2835840.

The previous prime is 9930143. The next prime is 9930169. The reversal of 9930144 is 4410399.

It is not an unprimeable number, because it can be changed into a prime (9930143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3649 + ... + 5759.

It is an arithmetic number, because the mean of its divisors is an integer number (421344).

Almost surely, 2^9930144 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 9930144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15168384).

9930144 is an abundant number, since it is smaller than the sum of its proper divisors (20406624).

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

9930144 is a wasteful number, since it uses less digits than its factorization.

9930144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 9930144 is about 3151.2130997443. The cubic root of 9930144 is about 214.9406290005.

The spelling of 9930144 in words is "nine million, nine hundred thirty thousand, one hundred forty-four".