268048021 has 2 divisors, whose sum is σ = 268048022. Its totient is φ = 268048020.

The previous prime is 268048013. The next prime is 268048057. The reversal of 268048021 is 120840862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 190854225 + 77193796 = 13815^2 + 8786^2 .

It is a cyclic number.

It is not a de Polignac number, because 268048021 - 2³ = 268048013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268048621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134024010 + 134024011.

It is an arithmetic number, because the mean of its divisors is an integer number (134024011).

Almost surely, 2^268048021 is an apocalyptic number.

It is an amenable number.

268048021 is a deficient number, since it is larger than the sum of its proper divisors (1).

268048021 is an equidigital number, since it uses as much as digits as its factorization.

268048021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 268048021 is about 16372.1721527719. The cubic root of 268048021 is about 644.7690786444.

Adding to 268048021 its reverse (120840862), we get a palindrome (388888883).

The spelling of 268048021 in words is "two hundred sixty-eight million, forty-eight thousand, twenty-one".