228471 has 4 divisors (see below), whose sum is σ = 304632. Its totient is φ = 152312.

The previous prime is 228469. The next prime is 228479. The reversal of 228471 is 174822.

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 228471 - 2¹ = 228469 is a prime.

It is a super-3 number, since 3×228471³ = 35777871707193333, which contains 333 as substring.

It is a D-number.

228471 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38076 + ... + 38081.

It is an arithmetic number, because the mean of its divisors is an integer number (76158).

2²²⁸⁴⁷¹ is an apocalyptic number.

228471 is a deficient number, since it is larger than the sum of its proper divisors (76161).

228471 is an equidigital number, since it uses as much as digits as its factorization.

228471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76160.

The product of its digits is 896, while the sum is 24.

The square root of 228471 is about 477.9864014802. The cubic root of 228471 is about 61.1331856586.

The spelling of 228471 in words is "two hundred twenty-eight thousand, four hundred seventy-one".