228945 has 8 divisors (see below), whose sum is σ = 366336. Its totient is φ = 122096.

The previous prime is 228929. The next prime is 228953. The reversal of 228945 is 549822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228945 - 2⁴ = 228929 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7617 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (45792).

2²²⁸⁹⁴⁵ is an apocalyptic number.

It is an amenable number.

228945 is a deficient number, since it is larger than the sum of its proper divisors (137391).

228945 is a wasteful number, since it uses less digits than its factorization.

228945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15271.

The product of its digits is 5760, while the sum is 30.

The square root of 228945 is about 478.4819745821. The cubic root of 228945 is about 61.1754333455.

The spelling of 228945 in words is "two hundred twenty-eight thousand, nine hundred forty-five".