228833257 has 2 divisors, whose sum is σ = 228833258. Its totient is φ = 228833256.

The previous prime is 228833239. The next prime is 228833263. The reversal of 228833257 is 752338822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178195801 + 50637456 = 13349^2 + 7116^2 .

It is a cyclic number.

It is not a de Polignac number, because 228833257 - 2²⁷ = 94615529 is a prime.

It is not a weakly prime, because it can be changed into another prime (228833237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114416628 + 114416629.

It is an arithmetic number, because the mean of its divisors is an integer number (114416629).

Almost surely, 2^228833257 is an apocalyptic number.

It is an amenable number.

228833257 is a deficient number, since it is larger than the sum of its proper divisors (1).

228833257 is an equidigital number, since it uses as much as digits as its factorization.

228833257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 161280, while the sum is 40.

The square root of 228833257 is about 15127.2356033745. The cubic root of 228833257 is about 611.6547893298.

The spelling of 228833257 in words is "two hundred twenty-eight million, eight hundred thirty-three thousand, two hundred fifty-seven".