271243540 has 12 divisors (see below), whose sum is σ = 569611476. Its totient is φ = 108497408.

The previous prime is 271243529. The next prime is 271243543. The reversal of 271243540 is 45342172.

It can be written as a sum of positive squares in 2 ways, for example, as 150111504 + 121132036 = 12252^2 + 11006^2 .

It is a junction number, because it is equal to n+sod(n) for n = 271243499 and 271243508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (271243543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6781069 + ... + 6781108.

It is an arithmetic number, because the mean of its divisors is an integer number (47467623).

Almost surely, 2^271243540 is an apocalyptic number.

271243540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271243540 is an abundant number, since it is smaller than the sum of its proper divisors (298367936).

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

271243540 is a wasteful number, since it uses less digits than its factorization.

271243540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13562186 (or 13562184 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 271243540 is about 16469.4729727457. The cubic root of 271243540 is about 647.3211563133.

The spelling of 271243540 in words is "two hundred seventy-one million, two hundred forty-three thousand, five hundred forty".