268642988 has 12 divisors (see below), whose sum is σ = 481591992. Its totient is φ = 131045280.

The previous prime is 268642981. The next prime is 268643003. The reversal of 268642988 is 889246862.

268642988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (268642981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818870 + ... + 819197.

It is an arithmetic number, because the mean of its divisors is an integer number (40132666).

Almost surely, 2^268642988 is an apocalyptic number.

It is an amenable number.

268642988 is a deficient number, since it is larger than the sum of its proper divisors (212949004).

268642988 is a wasteful number, since it uses less digits than its factorization.

268642988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638112 (or 1638110 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 53.

The square root of 268642988 is about 16390.3321503867. The cubic root of 268642988 is about 645.2457753744.

The spelling of 268642988 in words is "two hundred sixty-eight million, six hundred forty-two thousand, nine hundred eighty-eight".