181268 has 6 divisors (see below), whose sum is σ = 317226. Its totient is φ = 90632.

The previous prime is 181253. The next prime is 181273. The reversal of 181268 is 862181.

It can be written as a sum of positive squares in only one way, i.e., 145924 + 35344 = 382^2 + 188^2 .

It is a congruent number.

It is an unprimeable number.

181268 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22655 + ... + 22662.

It is an arithmetic number, because the mean of its divisors is an integer number (52871).

2¹⁸¹²⁶⁸ is an apocalyptic number.

It is an amenable number.

181268 is a deficient number, since it is larger than the sum of its proper divisors (135958).

181268 is a wasteful number, since it uses less digits than its factorization.

181268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45321 (or 45319 counting only the distinct ones).

The product of its digits is 768, while the sum is 26.

The square root of 181268 is about 425.7557985512. The cubic root of 181268 is about 56.5944331450.

The spelling of 181268 in words is "one hundred eighty-one thousand, two hundred sixty-eight".