268803690 has 16 divisors (see below), whose sum is σ = 645128928. Its totient is φ = 71680976.

The previous prime is 268803683. The next prime is 268803709. The reversal of 268803690 is 96308862.

It is a super-2 number, since 2×268803690² = 144510847515232200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4480032 + ... + 4480091.

It is an arithmetic number, because the mean of its divisors is an integer number (40320558).

Almost surely, 2^268803690 is an apocalyptic number.

268803690 is an abundant number, since it is smaller than the sum of its proper divisors (376325238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268803690 is a wasteful number, since it uses less digits than its factorization.

268803690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8960133.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 268803690 is about 16395.2337586263. The cubic root of 268803690 is about 645.3744115470.

The spelling of 268803690 in words is "two hundred sixty-eight million, eight hundred three thousand, six hundred ninety".