228144263 has 4 divisors (see below), whose sum is σ = 228177720. Its totient is φ = 228110808.

The previous prime is 228144173. The next prime is 228144281. The reversal of 228144263 is 362441822.

228144263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362441822 = 2 ⋅181220911.

It is a cyclic number.

It is not a de Polignac number, because 228144263 - 2¹⁰ = 228143239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228143263) 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, 2420 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (57044430).

Almost surely, 2^228144263 is an apocalyptic number.

228144263 is a deficient number, since it is larger than the sum of its proper divisors (33457).

228144263 is an equidigital number, since it uses as much as digits as its factorization.

228144263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33456.

The product of its digits is 18432, while the sum is 32.

The square root of 228144263 is about 15104.4451404214. The cubic root of 228144263 is about 611.0402951023.

The spelling of 228144263 in words is "two hundred twenty-eight million, one hundred forty-four thousand, two hundred sixty-three".