228719 has 4 divisors (see below), whose sum is σ = 229680. Its totient is φ = 227760.

The previous prime is 228713. The next prime is 228731. The reversal of 228719 is 917822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228719 is a prime.

It is a super-2 number, since 2×228719² = 104624761922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228691 and 228700.

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, 179 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (57420).

2²²⁸⁷¹⁹ is an apocalyptic number.

228719 is a deficient number, since it is larger than the sum of its proper divisors (961).

228719 is an equidigital number, since it uses as much as digits as its factorization.

228719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960.

The product of its digits is 2016, while the sum is 29.

The square root of 228719 is about 478.2457527255. The cubic root of 228719 is about 61.1552972142.

The spelling of 228719 in words is "two hundred twenty-eight thousand, seven hundred nineteen".