8428636 has 12 divisors (see below), whose sum is σ = 14787360. Its totient is φ = 4203680.

The previous prime is 8428633. The next prime is 8428661. The reversal of 8428636 is 6368248.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8428595 and 8428604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721 + ... + 4168.

It is an arithmetic number, because the mean of its divisors is an integer number (1232280).

Almost surely, 2^8428636 is an apocalyptic number.

It is an amenable number.

8428636 is a deficient number, since it is larger than the sum of its proper divisors (6358724).

8428636 is a wasteful number, since it uses less digits than its factorization.

8428636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5324 (or 5322 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 8428636 is about 2903.2113254119. The cubic root of 8428636 is about 203.5100056053.

The spelling of 8428636 in words is "eight million, four hundred twenty-eight thousand, six hundred thirty-six".