8428165 has 8 divisors (see below), whose sum is σ = 10360728. Its totient is φ = 6577920.

The previous prime is 8428163. The next prime is 8428169. The reversal of 8428165 is 5618248.

It can be written as a sum of positive squares in 4 ways, for example, as 311364 + 8116801 = 558^2 + 2849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8428165 - 2¹ = 8428163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8428165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428163) 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, 20352 + ... + 20761.

It is an arithmetic number, because the mean of its divisors is an integer number (1295091).

Almost surely, 2^8428165 is an apocalyptic number.

It is an amenable number.

8428165 is a deficient number, since it is larger than the sum of its proper divisors (1932563).

8428165 is a wasteful number, since it uses less digits than its factorization.

8428165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41159.

The product of its digits is 15360, while the sum is 34.

The square root of 8428165 is about 2903.1302072074. The cubic root of 8428165 is about 203.5062147587.

The spelling of 8428165 in words is "eight million, four hundred twenty-eight thousand, one hundred sixty-five".