228545 has 8 divisors (see below), whose sum is σ = 280896. Its totient is φ = 178416.

The previous prime is 228539. The next prime is 228559. The reversal of 228545 is 545822.

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 228545 - 2¹² = 224449 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317 + ... + 746.

It is an arithmetic number, because the mean of its divisors is an integer number (35112).

2²²⁸⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

228545 is a deficient number, since it is larger than the sum of its proper divisors (52351).

228545 is a wasteful number, since it uses less digits than its factorization.

228545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its digits is 3200, while the sum is 26.

The square root of 228545 is about 478.0638032732. The cubic root of 228545 is about 61.1397851357.

The spelling of 228545 in words is "two hundred twenty-eight thousand, five hundred forty-five".