228486 has 16 divisors (see below), whose sum is σ = 462384. Its totient is φ = 75264.
The previous prime is 228479. The next prime is 228509. The reversal of 228486 is 684822.
It is a happy number.
It is a congruent number.
It is an unprimeable number.
228486 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510 + ... + 846.
It is an arithmetic number, because the mean of its divisors is an integer number (28899).
228486 is a Friedman number, since it can be written as (486-8)^2+2, using all its digits and the basic arithmetic operations.
2228486 is an apocalyptic number.
228486 is an abundant number, since it is smaller than the sum of its proper divisors (233898).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
228486 is a wasteful number, since it uses less digits than its factorization.
228486 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 455.
The product of its digits is 6144, while the sum is 30.
The square root of 228486 is about 478.0020920456. The cubic root of 228486 is about 61.1345235056.
The spelling of 228486 in words is "two hundred twenty-eight thousand, four hundred eighty-six".
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