268892981 has 8 divisors (see below), whose sum is σ = 307807680. Its totient is φ = 230103648.

The previous prime is 268892971. The next prime is 268893049. The reversal of 268892981 is 189298862.

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 268892981 - 2¹⁰ = 268891957 is a prime.

It is a super-2 number, since 2×268892981² = 144606870462132722, 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 (268892971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26696 + ... + 35361.

It is an arithmetic number, because the mean of its divisors is an integer number (38475960).

Almost surely, 2^268892981 is an apocalyptic number.

It is an amenable number.

268892981 is a deficient number, since it is larger than the sum of its proper divisors (38914699).

268892981 is an equidigital number, since it uses as much as digits as its factorization.

268892981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62683.

The product of its digits is 995328, while the sum is 53.

The square root of 268892981 is about 16397.9566105049. The cubic root of 268892981 is about 645.4458636254.

The spelling of 268892981 in words is "two hundred sixty-eight million, eight hundred ninety-two thousand, nine hundred eighty-one".