8940240 has 80 divisors (see below), whose sum is σ = 30801600. Its totient is φ = 2383488.

The previous prime is 8940229. The next prime is 8940247. The reversal of 8940240 is 420498.

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

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8940247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (385020).

Almost surely, 2^8940240 is an apocalyptic number.

8940240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8940240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15400800).

8940240 is an abundant number, since it is smaller than the sum of its proper divisors (21861360).

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

8940240 is a wasteful number, since it uses less digits than its factorization.

8940240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161 (or 4149 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8940240 is about 2990.0234112796. The cubic root of 8940240 is about 207.5469676426.

It can be divided in two parts, 8940 and 240, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 8940240 in words is "eight million, nine hundred forty thousand, two hundred forty".