271428 has 12 divisors (see below), whose sum is σ = 633360. Its totient is φ = 90472.

The previous prime is 271409. The next prime is 271429. The reversal of 271428 is 824172.

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

It is a junction number, because it is equal to n+sod(n) for n = 271398 and 271407.

It is not an unprimeable number, because it can be changed into a prime (271429) by changing a digit.

271428 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11298 + ... + 11321.

It is an arithmetic number, because the mean of its divisors is an integer number (52780).

2²⁷¹⁴²⁸ is an apocalyptic number.

It is an amenable number.

271428 is an abundant number, since it is smaller than the sum of its proper divisors (361932).

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

271428 is a wasteful number, since it uses less digits than its factorization.

271428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22626 (or 22624 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 271428 is about 520.9875238429. The cubic root of 271428 is about 64.7467860641.

The spelling of 271428 in words is "two hundred seventy-one thousand, four hundred twenty-eight".