228143871 has 20 divisors (see below), whose sum is σ = 341220000. Its totient is φ = 151911936.

The previous prime is 228143869. The next prime is 228143873. The reversal of 228143871 is 178341822.

It is an interprime number because it is at equal distance from previous prime (228143869) and next prime (228143873).

It is not a de Polignac number, because 228143871 - 2¹ = 228143869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228143873) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 113130 + ... + 115128.

It is an arithmetic number, because the mean of its divisors is an integer number (17061000).

Almost surely, 2^228143871 is an apocalyptic number.

228143871 is a deficient number, since it is larger than the sum of its proper divisors (113076129).

228143871 is a wasteful number, since it uses less digits than its factorization.

228143871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3411 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 228143871 is about 15104.4321641034. The cubic root of 228143871 is about 611.0399451367.

The spelling of 228143871 in words is "two hundred twenty-eight million, one hundred forty-three thousand, eight hundred seventy-one".