228649271 has 4 divisors (see below), whose sum is σ = 229139352. Its totient is φ = 228159192.

The previous prime is 228649243. The next prime is 228649283. The reversal of 228649271 is 172946822.

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 228649271 - 2⁶ = 228649207 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 (228649231) 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, 244340 + ... + 245273.

It is an arithmetic number, because the mean of its divisors is an integer number (57284838).

Almost surely, 2^228649271 is an apocalyptic number.

228649271 is a deficient number, since it is larger than the sum of its proper divisors (490081).

228649271 is an equidigital number, since it uses as much as digits as its factorization.

228649271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490080.

The product of its digits is 96768, while the sum is 41.

The square root of 228649271 is about 15121.1530975650. The cubic root of 228649271 is about 611.4908182747.

The spelling of 228649271 in words is "two hundred twenty-eight million, six hundred forty-nine thousand, two hundred seventy-one".