27081012 has 48 divisors (see below), whose sum is σ = 74712960. Its totient is φ = 7469952.

The previous prime is 27081007. The next prime is 27081031. The reversal of 27081012 is 21018072.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 27081012.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3123 + ... + 7994.

It is an arithmetic number, because the mean of its divisors is an integer number (1556520).

Almost surely, 2^27081012 is an apocalyptic number.

It is an amenable number.

27081012 is an abundant number, since it is smaller than the sum of its proper divisors (47631948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27081012 is a wasteful number, since it uses less digits than its factorization.

27081012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160 (or 11158 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 27081012 is about 5203.9419673936. The cubic root of 27081012 is about 300.2997448548.

Adding to 27081012 its reverse (21018072), we get a palindrome (48099084).

The spelling of 27081012 in words is "twenty-seven million, eighty-one thousand, twelve".