268721140 has 24 divisors (see below), whose sum is σ = 565542432. Its totient is φ = 107254560.

The previous prime is 268721111. The next prime is 268721149. The reversal of 268721140 is 41127862.

268721140 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×268721140² = 144422102165799200, which contains 22 as substring.

268721140 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268721149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5046 + ... + 23725.

It is an arithmetic number, because the mean of its divisors is an integer number (23564268).

Almost surely, 2^268721140 is an apocalyptic number.

268721140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268721140 is an abundant number, since it is smaller than the sum of its proper divisors (296821292).

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

268721140 is a wasteful number, since it uses less digits than its factorization.

268721140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29247 (or 29245 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 268721140 is about 16392.7160653749. The cubic root of 268721140 is about 645.3083396461.

The spelling of 268721140 in words is "two hundred sixty-eight million, seven hundred twenty-one thousand, one hundred forty".