271991427 has 16 divisors (see below), whose sum is σ = 375168000. Its totient is φ = 175096800.

The previous prime is 271991413. The next prime is 271991431. The reversal of 271991427 is 724199172.

It is not a de Polignac number, because 271991427 - 2⁴ = 271991411 is a prime.

It is a super-2 number, since 2×271991427² = 147958672722992658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (271991437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43477 + ... + 49337.

It is an arithmetic number, because the mean of its divisors is an integer number (23448000).

Almost surely, 2^271991427 is an apocalyptic number.

271991427 is a deficient number, since it is larger than the sum of its proper divisors (103176573).

271991427 is a wasteful number, since it uses less digits than its factorization.

271991427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6394.

The product of its digits is 63504, while the sum is 42.

The square root of 271991427 is about 16492.1625931835. The cubic root of 271991427 is about 647.9155530291.

The spelling of 271991427 in words is "two hundred seventy-one million, nine hundred ninety-one thousand, four hundred twenty-seven".