2727390881 has 4 divisors (see below), whose sum is σ = 2815371264. Its totient is φ = 2639410500.

The previous prime is 2727390857. The next prime is 2727390893. The reversal of 2727390881 is 1880937272.

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 a cyclic number.

It is not a de Polignac number, because 2727390881 - 2¹⁰ = 2727389857 is a prime.

It is a super-2 number, since 2×2727390881² = 14877322035523912322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2727390821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43990145 + ... + 43990206.

It is an arithmetic number, because the mean of its divisors is an integer number (703842816).

Almost surely, 2^2727390881 is an apocalyptic number.

It is an amenable number.

2727390881 is a deficient number, since it is larger than the sum of its proper divisors (87980383).

2727390881 is an equidigital number, since it uses as much as digits as its factorization.

2727390881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87980382.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 2727390881 is about 52224.4280102712. The cubic root of 2727390881 is about 1397.1696015002.

The spelling of 2727390881 in words is "two billion, seven hundred twenty-seven million, three hundred ninety thousand, eight hundred eighty-one".