8840040 has 128 divisors (see below), whose sum is σ = 29877120. Its totient is φ = 2073600.

The previous prime is 8839967. The next prime is 8840057. The reversal of 8840040 is 400488.

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

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48750 + ... + 48930.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^8840040 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 8840040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14938560).

8840040 is an abundant number, since it is smaller than the sum of its proper divisors (21037080).

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

8840040 is a wasteful number, since it uses less digits than its factorization.

8840040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 8840040 is about 2973.2204761840. The cubic root of 8840040 is about 206.7686743503.

It can be divided in two parts, 8 and 840040, that added together give a palindrome (840048).

The spelling of 8840040 in words is "eight million, eight hundred forty thousand, forty".