228450 has 24 divisors (see below), whose sum is σ = 566928. Its totient is φ = 60880.

The previous prime is 228443. The next prime is 228451. The reversal of 228450 is 54822.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (228451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 612 + ... + 911.

It is an arithmetic number, because the mean of its divisors is an integer number (23622).

2²²⁸⁴⁵⁰ is an apocalyptic number.

228450 is an abundant number, since it is smaller than the sum of its proper divisors (338478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228450 is a wasteful number, since it uses less digits than its factorization.

228450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1533 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 228450 is about 477.9644338233. The cubic root of 228450 is about 61.1313125744.

The spelling of 228450 in words is "two hundred twenty-eight thousand, four hundred fifty".