228757 has 2 divisors, whose sum is σ = 228758. Its totient is φ = 228756.

The previous prime is 228751. The next prime is 228773. The reversal of 228757 is 757822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188356 + 40401 = 434^2 + 201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228757 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114378 + 114379.

It is an arithmetic number, because the mean of its divisors is an integer number (114379).

2²²⁸⁷⁵⁷ is an apocalyptic number.

It is an amenable number.

228757 is a deficient number, since it is larger than the sum of its proper divisors (1).

228757 is an equidigital number, since it uses as much as digits as its factorization.

228757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 31.

The square root of 228757 is about 478.2854796040. The cubic root of 228757 is about 61.1586838628.

The spelling of 228757 in words is "two hundred twenty-eight thousand, seven hundred fifty-seven".