228345 has 16 divisors (see below), whose sum is σ = 393792. Its totient is φ = 112320.

The previous prime is 228341. The next prime is 228353. The reversal of 228345 is 543822.

It is not a de Polignac number, because 228345 - 2² = 228341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 391 + ... + 780.

It is an arithmetic number, because the mean of its divisors is an integer number (24612).

2²²⁸³⁴⁵ is an apocalyptic number.

It is an amenable number.

228345 is a deficient number, since it is larger than the sum of its proper divisors (165447).

228345 is a wasteful number, since it uses less digits than its factorization.

228345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192.

The product of its digits is 1920, while the sum is 24.

The square root of 228345 is about 477.8545803903. The cubic root of 228345 is about 61.1219454314.

The spelling of 228345 in words is "two hundred twenty-eight thousand, three hundred forty-five".