8728163 has 4 divisors (see below), whose sum is σ = 9187560. Its totient is φ = 8268768.

The previous prime is 8728147. The next prime is 8728169. The reversal of 8728163 is 3618278.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8728163 - 2⁴ = 8728147 is a prime.

It is a d-powerful number, because it can be written as 8 + 7² + 2²³ + 8³ + 1 + 6⁷ + 3¹⁰ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8728169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229670 + ... + 229707.

It is an arithmetic number, because the mean of its divisors is an integer number (2296890).

Almost surely, 2^8728163 is an apocalyptic number.

8728163 is a deficient number, since it is larger than the sum of its proper divisors (459397).

8728163 is a wasteful number, since it uses less digits than its factorization.

8728163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459396.

The product of its digits is 16128, while the sum is 35.

The square root of 8728163 is about 2954.3464590329. The cubic root of 8728163 is about 205.8927002707.

The spelling of 8728163 in words is "eight million, seven hundred twenty-eight thousand, one hundred sixty-three".