228013 has 2 divisors, whose sum is σ = 228014. Its totient is φ = 228012.
The previous prime is 227993. The next prime is 228023. The reversal of 228013 is 310822.
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 227529 + 484 = 477^2 + 22^2 .
It is a cyclic number.
It is not a de Polignac number, because 228013 - 29 = 227501 is a prime.
It is a plaindrome in base 16.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (228023) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114006 + 114007.
It is an arithmetic number, because the mean of its divisors is an integer number (114007).
2228013 is an apocalyptic number.
It is an amenable number.
228013 is a deficient number, since it is larger than the sum of its proper divisors (1).
228013 is an equidigital number, since it uses as much as digits as its factorization.
228013 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 96, while the sum is 16.
The square root of 228013 is about 477.5070680105. The cubic root of 228013 is about 61.0923085099.
Adding to 228013 its reverse (310822), we get a palindrome (538835).
The spelling of 228013 in words is "two hundred twenty-eight thousand, thirteen".
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