228743 has 4 divisors (see below), whose sum is σ = 232680. Its totient is φ = 224808.

The previous prime is 228737. The next prime is 228751. The reversal of 228743 is 347822.

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 228743 - 2¹⁰ = 227719 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 (228713) 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, 1880 + ... + 1997.

It is an arithmetic number, because the mean of its divisors is an integer number (58170).

2²²⁸⁷⁴³ is an apocalyptic number.

228743 is a deficient number, since it is larger than the sum of its proper divisors (3937).

228743 is an equidigital number, since it uses as much as digits as its factorization.

228743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3936.

The product of its digits is 2688, while the sum is 26.

The square root of 228743 is about 478.2708437695. The cubic root of 228743 is about 61.1574361938.

The spelling of 228743 in words is "two hundred twenty-eight thousand, seven hundred forty-three".