209696268 has 12 divisors (see below), whose sum is σ = 489291320. Its totient is φ = 69898752.

The previous prime is 209696261. The next prime is 209696273. The reversal of 209696268 is 862696902.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (209696261) 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, 8737333 + ... + 8737356.

Almost surely, 2^209696268 is an apocalyptic number.

It is an amenable number.

209696268 is an abundant number, since it is smaller than the sum of its proper divisors (279595052).

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

209696268 is a wasteful number, since it uses less digits than its factorization.

209696268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17474696 (or 17474694 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 209696268 is about 14480.8932044954. The cubic root of 209696268 is about 594.1054920395.

The spelling of 209696268 in words is "two hundred nine million, six hundred ninety-six thousand, two hundred sixty-eight".