28338163 has 4 divisors (see below), whose sum is σ = 32386480. Its totient is φ = 24289848.

The previous prime is 28338143. The next prime is 28338173. The reversal of 28338163 is 36183382.

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 28338163 - 2²¹ = 26241011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28338103) 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, 2024148 + ... + 2024161.

It is an arithmetic number, because the mean of its divisors is an integer number (8096620).

Almost surely, 2^28338163 is an apocalyptic number.

28338163 is a deficient number, since it is larger than the sum of its proper divisors (4048317).

28338163 is an equidigital number, since it uses as much as digits as its factorization.

28338163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048316.

The product of its digits is 20736, while the sum is 34.

The square root of 28338163 is about 5323.3601230802. The cubic root of 28338163 is about 304.8764634518.

The spelling of 28338163 in words is "twenty-eight million, three hundred thirty-eight thousand, one hundred sixty-three".