272127981 has 4 divisors (see below), whose sum is σ = 362837312. Its totient is φ = 181418652.

The previous prime is 272127953. The next prime is 272127991. The reversal of 272127981 is 189721272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 272127981 - 2¹⁰ = 272126957 is a prime.

It is a super-2 number, since 2×272127981² = 148107276086272722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (272127991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45354661 + ... + 45354666.

It is an arithmetic number, because the mean of its divisors is an integer number (90709328).

Almost surely, 2^272127981 is an apocalyptic number.

It is an amenable number.

272127981 is a deficient number, since it is larger than the sum of its proper divisors (90709331).

272127981 is an equidigital number, since it uses as much as digits as its factorization.

272127981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90709330.

The product of its digits is 28224, while the sum is 39.

The square root of 272127981 is about 16496.3020401543. The cubic root of 272127981 is about 648.0239641153.

The spelling of 272127981 in words is "two hundred seventy-two million, one hundred twenty-seven thousand, nine hundred eighty-one".