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268181 = 3141211
BaseRepresentation
bin1000001011110010101
3111121212122
41001132111
532040211
65425325
72164604
oct1013625
9447778
10268181
11173541
1210b245
13950b4
146da3b
15546db
hex41795

268181 has 8 divisors (see below), whose sum is σ = 284928. Its totient is φ = 252000.

The previous prime is 268171. The next prime is 268189. The reversal of 268181 is 181862.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268181 - 218 = 6037 is a prime.

It is a super-3 number, since 3×2681813 = 57863576333321223, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 268181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268189) 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, 1166 + ... + 1376.

It is an arithmetic number, because the mean of its divisors is an integer number (35616).

2268181 is an apocalyptic number.

It is an amenable number.

268181 is a deficient number, since it is larger than the sum of its proper divisors (16747).

268181 is a wasteful number, since it uses less digits than its factorization.

268181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283.

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

The square root of 268181 is about 517.8619507166. The cubic root of 268181 is about 64.4875684633.

The spelling of 268181 in words is "two hundred sixty-eight thousand, one hundred eighty-one".

Divisors: 1 31 41 211 1271 6541 8651 268181