253868 has 6 divisors (see below), whose sum is σ = 444276. Its totient is φ = 126932.

The previous prime is 253867. The next prime is 253871. The reversal of 253868 is 868352.

253868 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×253868² = 128897922848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (253867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31730 + ... + 31737.

It is an arithmetic number, because the mean of its divisors is an integer number (74046).

2²⁵³⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

253868 is a deficient number, since it is larger than the sum of its proper divisors (190408).

253868 is a wasteful number, since it uses less digits than its factorization.

253868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63471 (or 63469 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 253868 is about 503.8531532103. The cubic root of 253868 is about 63.3192828173.

The spelling of 253868 in words is "two hundred fifty-three thousand, eight hundred sixty-eight".