8428236 has 12 divisors (see below), whose sum is σ = 19665912. Its totient is φ = 2809408.

The previous prime is 8428213. The next prime is 8428237. The reversal of 8428236 is 6328248.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×8428236³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8428197 and 8428206.

It is not an unprimeable number, because it can be changed into a prime (8428237) 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, 351165 + ... + 351188.

It is an arithmetic number, because the mean of its divisors is an integer number (1638826).

Almost surely, 2^8428236 is an apocalyptic number.

It is an amenable number.

8428236 is an abundant number, since it is smaller than the sum of its proper divisors (11237676).

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

8428236 is a wasteful number, since it uses less digits than its factorization.

8428236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702360 (or 702358 counting only the distinct ones).

The product of its digits is 18432, while the sum is 33.

The square root of 8428236 is about 2903.1424353621. The cubic root of 8428236 is about 203.5067862117.

The spelling of 8428236 in words is "eight million, four hundred twenty-eight thousand, two hundred thirty-six".