27090012 has 24 divisors (see below), whose sum is σ = 64752912. Its totient is φ = 8809600.

The previous prime is 27089983. The next prime is 27090017. The reversal of 27090012 is 21009072.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27090017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27039 + ... + 28022.

It is an arithmetic number, because the mean of its divisors is an integer number (2698038).

Almost surely, 2^27090012 is an apocalyptic number.

It is an amenable number.

27090012 is an abundant number, since it is smaller than the sum of its proper divisors (37662900).

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

27090012 is a wasteful number, since it uses less digits than its factorization.

27090012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55109 (or 55107 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 27090012 is about 5204.8066246499. The cubic root of 27090012 is about 300.3330079933. Note that the first 3 decimals are identical.

Adding to 27090012 its reverse (21009072), we get a palindrome (48099084).

The spelling of 27090012 in words is "twenty-seven million, ninety thousand, twelve".