268228237 has 2 divisors, whose sum is σ = 268228238. Its totient is φ = 268228236.

The previous prime is 268228217. The next prime is 268228243. The reversal of 268228237 is 732822862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221592996 + 46635241 = 14886^2 + 6829^2 .

It is a cyclic number.

It is not a de Polignac number, because 268228237 - 2¹⁹ = 267703949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 268228237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268228217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134114118 + 134114119.

It is an arithmetic number, because the mean of its divisors is an integer number (134114119).

Almost surely, 2^268228237 is an apocalyptic number.

It is an amenable number.

268228237 is a deficient number, since it is larger than the sum of its proper divisors (1).

268228237 is an equidigital number, since it uses as much as digits as its factorization.

268228237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129024, while the sum is 40.

The square root of 268228237 is about 16377.6749570872. The cubic root of 268228237 is about 644.9135448891.

The spelling of 268228237 in words is "two hundred sixty-eight million, two hundred twenty-eight thousand, two hundred thirty-seven".