268422781 has 8 divisors (see below), whose sum is σ = 299055744. Its totient is φ = 238828320.

The previous prime is 268422779. The next prime is 268422787. The reversal of 268422781 is 187224862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268422781 - 2¹ = 268422779 is a prime.

It is a super-2 number, since 2×268422781² = 144101578719547922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268422787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259080 + ... + 260113.

It is an arithmetic number, because the mean of its divisors is an integer number (37381968).

Almost surely, 2^268422781 is an apocalyptic number.

It is an amenable number.

268422781 is a deficient number, since it is larger than the sum of its proper divisors (30632963).

268422781 is a wasteful number, since it uses less digits than its factorization.

268422781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519251.

The product of its digits is 86016, while the sum is 40.

The square root of 268422781 is about 16383.6131851311. The cubic root of 268422781 is about 645.0694242521.

The spelling of 268422781 in words is "two hundred sixty-eight million, four hundred twenty-two thousand, seven hundred eighty-one".