8224840 has 32 divisors (see below), whose sum is σ = 19930680. Its totient is φ = 3036672.

The previous prime is 8224831. The next prime is 8224847. The reversal of 8224840 is 484228.

It can be written as a sum of positive squares in 4 ways, for example, as 6770404 + 1454436 = 2602^2 + 1206^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8224799 and 8224808.

It is not an unprimeable number, because it can be changed into a prime (8224847) 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, 7389 + ... + 8428.

Almost surely, 2^8224840 is an apocalyptic number.

It is an amenable number.

8224840 is an abundant number, since it is smaller than the sum of its proper divisors (11705840).

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

8224840 is a wasteful number, since it uses less digits than its factorization.

8224840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15841 (or 15837 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 8224840 is about 2867.8981850826. The cubic root of 8224840 is about 201.8563825738.

The spelling of 8224840 in words is "eight million, two hundred twenty-four thousand, eight hundred forty".