228457 has 2 divisors, whose sum is σ = 228458. Its totient is φ = 228456.

The previous prime is 228451. The next prime is 228461. The reversal of 228457 is 754822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168921 + 59536 = 411^2 + 244^2 .

It is a cyclic number.

It is not a de Polignac number, because 228457 - 2¹¹ = 226409 is a prime.

It is not a weakly prime, because it can be changed into another prime (228451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114228 + 114229.

It is an arithmetic number, because the mean of its divisors is an integer number (114229).

2²²⁸⁴⁵⁷ is an apocalyptic number.

It is an amenable number.

228457 is a deficient number, since it is larger than the sum of its proper divisors (1).

228457 is an equidigital number, since it uses as much as digits as its factorization.

228457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4480, while the sum is 28.

The square root of 228457 is about 477.9717564878. The cubic root of 228457 is about 61.1319369486.

It can be divided in two parts, 228 and 457, that multiplied together give a triangular number (104196 = T₄₅₆).

The spelling of 228457 in words is "two hundred twenty-eight thousand, four hundred fifty-seven".