9911040 has 144 divisors (see below), whose sum is σ = 33112800. Its totient is φ = 2523136.

The previous prime is 9911023. The next prime is 9911063. The reversal of 9911040 is 401199.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 9911040.

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, 111316 + ... + 111404.

It is an arithmetic number, because the mean of its divisors is an integer number (229950).

Almost surely, 2^9911040 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 9911040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16556400).

9911040 is an abundant number, since it is smaller than the sum of its proper divisors (23201760).

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

9911040 is a wasteful number, since it uses less digits than its factorization.

9911040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 9911040 is about 3148.1804268498. The cubic root of 9911040 is about 214.8027034466.

The spelling of 9911040 in words is "nine million, nine hundred eleven thousand, forty".