268988877 has 16 divisors (see below), whose sum is σ = 400812480. Its totient is φ = 178286256.

The previous prime is 268988873. The next prime is 268988893. The reversal of 268988877 is 778889862.

It is not a de Polignac number, because 268988877 - 2² = 268988873 is a prime.

It is a super-2 number, since 2×268988877² = 144710031899442258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268988873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24123 + ... + 33464.

It is an arithmetic number, because the mean of its divisors is an integer number (25050780).

Almost surely, 2^268988877 is an apocalyptic number.

268988877 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

268988877 is a deficient number, since it is larger than the sum of its proper divisors (131823603).

268988877 is a wasteful number, since it uses less digits than its factorization.

268988877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57769 (or 57763 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 63.

The square root of 268988877 is about 16400.8803727117. The cubic root of 268988877 is about 645.5225835157.

The spelling of 268988877 in words is "two hundred sixty-eight million, nine hundred eighty-eight thousand, eight hundred seventy-seven".