268609992 has 192 divisors, whose sum is σ = 836858880. Its totient is φ = 70326144.

The previous prime is 268609951. The next prime is 268609993. The reversal of 268609992 is 299906862.

It is not an unprimeable number, because it can be changed into a prime (268609993) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2607813 + ... + 2607915.

It is an arithmetic number, because the mean of its divisors is an integer number (4358640).

Almost surely, 2^268609992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268609992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418429440).

268609992 is an abundant number, since it is smaller than the sum of its proper divisors (568248888).

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

268609992 is a wasteful number, since it uses less digits than its factorization.

268609992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 268609992 is about 16389.3255504917. The cubic root of 268609992 is about 645.2193569154.

The spelling of 268609992 in words is "two hundred sixty-eight million, six hundred nine thousand, nine hundred ninety-two".