224823 has 4 divisors (see below), whose sum is σ = 299768. Its totient is φ = 149880.

The previous prime is 224813. The next prime is 224831. The reversal of 224823 is 328422.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 224823 - 2⁶ = 224759 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 224823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (224813) 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, 37468 + ... + 37473.

It is an arithmetic number, because the mean of its divisors is an integer number (74942).

2²²⁴⁸²³ is an apocalyptic number.

224823 is a deficient number, since it is larger than the sum of its proper divisors (74945).

224823 is an equidigital number, since it uses as much as digits as its factorization.

224823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74944.

The product of its digits is 768, while the sum is 21.

The square root of 224823 is about 474.1550379359. The cubic root of 224823 is about 60.8060668865.

The spelling of 224823 in words is "two hundred twenty-four thousand, eight hundred twenty-three".