271812 has 12 divisors (see below), whose sum is σ = 634256. Its totient is φ = 90600.

The previous prime is 271811. The next prime is 271829. The reversal of 271812 is 218172.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (271811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11314 + ... + 11337.

2²⁷¹⁸¹² is an apocalyptic number.

It is an amenable number.

271812 is an abundant number, since it is smaller than the sum of its proper divisors (362444).

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

271812 is a wasteful number, since it uses less digits than its factorization.

271812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22658 (or 22656 counting only the distinct ones).

The product of its digits is 224, while the sum is 21.

The square root of 271812 is about 521.3559244892. The cubic root of 271812 is about 64.7773049620. Note that the first 3 decimals are identical.

Adding to 271812 its reverse (218172), we get a palindrome (489984).

The spelling of 271812 in words is "two hundred seventy-one thousand, eight hundred twelve".