8782240 has 48 divisors (see below), whose sum is σ = 20956320. Its totient is φ = 3477760.

The previous prime is 8782229. The next prime is 8782243. The reversal of 8782240 is 422878.

It is not an unprimeable number, because it can be changed into a prime (8782243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20751 + ... + 21169.

It is an arithmetic number, because the mean of its divisors is an integer number (436590).

Almost surely, 2^8782240 is an apocalyptic number.

8782240 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 8782240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10478160).

8782240 is an abundant number, since it is smaller than the sum of its proper divisors (12174080).

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

8782240 is a wasteful number, since it uses less digits than its factorization.

8782240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 8782240 is about 2963.4844355927. The cubic root of 8782240 is about 206.3170409549.

The spelling of 8782240 in words is "eight million, seven hundred eighty-two thousand, two hundred forty".