228733 has 2 divisors, whose sum is σ = 228734. Its totient is φ = 228732.

The previous prime is 228731. The next prime is 228737. The reversal of 228733 is 337822.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 85849 = 378^2 + 293^2 .

It is a cyclic number.

It is not a de Polignac number, because 228733 - 2¹ = 228731 is a prime.

Together with 228731, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 228698 and 228707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114366 + 114367.

It is an arithmetic number, because the mean of its divisors is an integer number (114367).

2²²⁸⁷³³ is an apocalyptic number.

It is an amenable number.

228733 is a deficient number, since it is larger than the sum of its proper divisors (1).

228733 is an equidigital number, since it uses as much as digits as its factorization.

228733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 25.

The square root of 228733 is about 478.2603893278. The cubic root of 228733 is about 61.1565449705.

It can be divided in two parts, 228 and 733, that added together give a square (961 = 31²).

The spelling of 228733 in words is "two hundred twenty-eight thousand, seven hundred thirty-three".