8428842 has 24 divisors (see below), whose sum is σ = 18362916. Its totient is φ = 2794176.

The previous prime is 8428811. The next prime is 8428867. The reversal of 8428842 is 2488248.

It can be written as a sum of positive squares in 2 ways, for example, as 7834401 + 594441 = 2799^2 + 771^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8428797 and 8428806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2358 + ... + 4734.

Almost surely, 2^8428842 is an apocalyptic number.

8428842 is an abundant number, since it is smaller than the sum of its proper divisors (9934074).

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

8428842 is a wasteful number, since it uses less digits than its factorization.

8428842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2579 counting only the distinct ones).

The product of its digits is 32768, while the sum is 36.

The square root of 8428842 is about 2903.2468031499. The cubic root of 8428842 is about 203.5116635532.

The spelling of 8428842 in words is "eight million, four hundred twenty-eight thousand, eight hundred forty-two".