27871012 has 24 divisors (see below), whose sum is σ = 52672256. Its totient is φ = 12827808.

The previous prime is 27871003. The next prime is 27871013. The reversal of 27871012 is 21017872.

It is not an unprimeable number, because it can be changed into a prime (27871013) by changing a digit.

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, 31123 + ... + 32005.

Almost surely, 2^27871012 is an apocalyptic number.

It is an amenable number.

27871012 is a deficient number, since it is larger than the sum of its proper divisors (24801244).

27871012 is a wasteful number, since it uses less digits than its factorization.

27871012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1507 (or 1505 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 28.

The square root of 27871012 is about 5279.3003324304. The cubic root of 27871012 is about 303.1918894014.

Adding to 27871012 its reverse (21017872), we get a palindrome (48888884).

The spelling of 27871012 in words is "twenty-seven million, eight hundred seventy-one thousand, twelve".