268988890 has 64 divisors (see below), whose sum is σ = 530893440. Its totient is φ = 97770240.

The previous prime is 268988873. The next prime is 268988893. The reversal of 268988890 is 98889862.

It is not an unprimeable number, because it can be changed into a prime (268988893) 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 31 ways as a sum of consecutive naturals, for example, 583260 + ... + 583720.

It is an arithmetic number, because the mean of its divisors is an integer number (8295210).

Almost surely, 2^268988890 is an apocalyptic number.

268988890 is a deficient number, since it is larger than the sum of its proper divisors (261904550).

268988890 is a wasteful number, since it uses less digits than its factorization.

With its successor (268988891) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (607).

268988890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 3981312, while the sum is 58.

The square root of 268988890 is about 16400.8807690319. The cubic root of 268988890 is about 645.5225939148.

The spelling of 268988890 in words is "two hundred sixty-eight million, nine hundred eighty-eight thousand, eight hundred ninety".