8228840 has 16 divisors (see below), whose sum is σ = 18514980. Its totient is φ = 3291520.

The previous prime is 8228827. The next prime is 8228863. The reversal of 8228840 is 488228.

It can be written as a sum of positive squares in 2 ways, for example, as 8213956 + 14884 = 2866^2 + 122^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8228797 and 8228806.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102821 + ... + 102900.

Almost surely, 2^8228840 is an apocalyptic number.

It is an amenable number.

8228840 is an abundant number, since it is smaller than the sum of its proper divisors (10286140).

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

8228840 is a wasteful number, since it uses less digits than its factorization.

8228840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205732 (or 205728 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 8228840 is about 2868.5954751411. The cubic root of 8228840 is about 201.8891003196.

It can be divided in two parts, 82288 and 40, that added together give a palindrome (82328).

The spelling of 8228840 in words is "eight million, two hundred twenty-eight thousand, eight hundred forty".