268981900 has 36 divisors (see below), whose sum is σ = 636756120. Its totient is φ = 97811200.

The previous prime is 268981883. The next prime is 268981901. The reversal of 268981900 is 9189862.

It is a happy number.

It is a super-2 number, since 2×268981900² = 144702525055220000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268981901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121165 + ... + 123364.

It is an arithmetic number, because the mean of its divisors is an integer number (17687670).

Almost surely, 2^268981900 is an apocalyptic number.

268981900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268981900 is an abundant number, since it is smaller than the sum of its proper divisors (367774220).

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

268981900 is a wasteful number, since it uses less digits than its factorization.

268981900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244554 (or 244547 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 268981900 is about 16400.6676693359. The cubic root of 268981900 is about 645.5170023059.

The spelling of 268981900 in words is "two hundred sixty-eight million, nine hundred eighty-one thousand, nine hundred".