271721320 has 32 divisors (see below), whose sum is σ = 658402920. Its totient is φ = 100327680.

The previous prime is 271721311. The next prime is 271721321. The reversal of 271721320 is 23127172.

It can be written as a sum of positive squares in 4 ways, for example, as 130919364 + 140801956 = 11442^2 + 11866^2 .

It is not an unprimeable number, because it can be changed into a prime (271721321) 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, 260751 + ... + 261790.

Almost surely, 2^271721320 is an apocalyptic number.

271721320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271721320 is an abundant number, since it is smaller than the sum of its proper divisors (386681600).

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

271721320 is a wasteful number, since it uses less digits than its factorization.

271721320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522565 (or 522561 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 25.

The square root of 271721320 is about 16483.9716088084. The cubic root of 271721320 is about 647.7010064512.

Adding to 271721320 its reverse (23127172), we get a palindrome (294848492).

The spelling of 271721320 in words is "two hundred seventy-one million, seven hundred twenty-one thousand, three hundred twenty".