27871481 has 8 divisors (see below), whose sum is σ = 30979584. Its totient is φ = 24859120.

The previous prime is 27871457. The next prime is 27871549. The reversal of 27871481 is 18417872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27871481 - 2²² = 23677177 is a prime.

It is a super-2 number, since 2×27871481² = 1553638906266722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27871411) 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 7 ways as a sum of consecutive naturals, for example, 23321 + ... + 24486.

It is an arithmetic number, because the mean of its divisors is an integer number (3872448).

Almost surely, 2^27871481 is an apocalyptic number.

It is an amenable number.

27871481 is a deficient number, since it is larger than the sum of its proper divisors (3108103).

27871481 is a wasteful number, since it uses less digits than its factorization.

27871481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47871.

The product of its digits is 25088, while the sum is 38.

The square root of 27871481 is about 5279.3447510084. The cubic root of 27871481 is about 303.1935900477.

The spelling of 27871481 in words is "twenty-seven million, eight hundred seventy-one thousand, four hundred eighty-one".