8815240 has 64 divisors (see below), whose sum is σ = 23875200. Its totient is φ = 2861568.

The previous prime is 8815237. The next prime is 8815267. The reversal of 8815240 is 425188.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8815199 and 8815208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4492 + ... + 6148.

It is an arithmetic number, because the mean of its divisors is an integer number (373050).

Almost surely, 2^8815240 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 8815240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11937600).

8815240 is an abundant number, since it is smaller than the sum of its proper divisors (15059960).

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

8815240 is a wasteful number, since it uses less digits than its factorization.

8815240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694 (or 1690 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 28.

The square root of 8815240 is about 2969.0469851452. The cubic root of 8815240 is about 206.5751357887.

The spelling of 8815240 in words is "eight million, eight hundred fifteen thousand, two hundred forty".