271521940 has 24 divisors (see below), whose sum is σ = 570620232. Its totient is φ = 108528000.

The previous prime is 271521931. The next prime is 271522007. The reversal of 271521940 is 49125172.

It can be written as a sum of positive squares in 4 ways, for example, as 1971216 + 269550724 = 1404^2 + 16418^2 .

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 27690 + ... + 36190.

It is an arithmetic number, because the mean of its divisors is an integer number (23775843).

Almost surely, 2^271521940 is an apocalyptic number.

271521940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

271521940 is an abundant number, since it is smaller than the sum of its proper divisors (299098292).

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

271521940 is a wasteful number, since it uses less digits than its factorization.

271521940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107 (or 10105 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 271521940 is about 16477.9228059850. The cubic root of 271521940 is about 647.5425472556.

It can be divided in two parts, 27152 and 1940, that added together give a palindrome (29092).

The spelling of 271521940 in words is "two hundred seventy-one million, five hundred twenty-one thousand, nine hundred forty".