228369 has 4 divisors (see below), whose sum is σ = 304496. Its totient is φ = 152244.

The previous prime is 228359. The next prime is 228383. The reversal of 228369 is 963822.

228369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 228369 - 2⁴ = 228353 is a prime.

It is a super-2 number, since 2×228369² = 104304800322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228359) 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, 38059 + ... + 38064.

It is an arithmetic number, because the mean of its divisors is an integer number (76124).

2²²⁸³⁶⁹ is an apocalyptic number.

It is an amenable number.

228369 is a deficient number, since it is larger than the sum of its proper divisors (76127).

228369 is an equidigital number, since it uses as much as digits as its factorization.

228369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76126.

The product of its digits is 5184, while the sum is 30.

The square root of 228369 is about 477.8796919728. The cubic root of 228369 is about 61.1240867458.

The spelling of 228369 in words is "two hundred twenty-eight thousand, three hundred sixty-nine".