228644271 has 24 divisors (see below), whose sum is σ = 368100720. Its totient is φ = 135910656.

The previous prime is 228644263. The next prime is 228644291. The reversal of 228644271 is 172446822.

228644271 is a `hidden beast` number, since 2 + 2 + 8 + 644 + 2 + 7 + 1 = 666.

It is not a de Polignac number, because 228644271 - 2³ = 228644263 is a prime.

It is a super-2 number, since 2×228644271² = 104556405322242882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228644231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36420 + ... + 42233.

It is an arithmetic number, because the mean of its divisors is an integer number (15337530).

Almost surely, 2^228644271 is an apocalyptic number.

228644271 is a deficient number, since it is larger than the sum of its proper divisors (139456449).

228644271 is a wasteful number, since it uses less digits than its factorization.

228644271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78695 (or 78692 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 228644271 is about 15120.9877653545. The cubic root of 228644271 is about 611.4863609729.

The spelling of 228644271 in words is "two hundred twenty-eight million, six hundred forty-four thousand, two hundred seventy-one".