228163235 has 4 divisors (see below), whose sum is σ = 273795888. Its totient is φ = 182530584.

The previous prime is 228163219. The next prime is 228163261. The reversal of 228163235 is 532361822.

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 228163235 - 2⁴ = 228163219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22816319 + ... + 22816328.

It is an arithmetic number, because the mean of its divisors is an integer number (68448972).

Almost surely, 2^228163235 is an apocalyptic number.

228163235 is a deficient number, since it is larger than the sum of its proper divisors (45632653).

228163235 is an equidigital number, since it uses as much as digits as its factorization.

228163235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45632652.

The product of its digits is 17280, while the sum is 32.

The square root of 228163235 is about 15105.0731544074. The cubic root of 228163235 is about 611.0572322441.

The spelling of 228163235 in words is "two hundred twenty-eight million, one hundred sixty-three thousand, two hundred thirty-five".