27012880 has 20 divisors (see below), whose sum is σ = 62805132. Its totient is φ = 10805120.

The previous prime is 27012863. The next prime is 27012893. The reversal of 27012880 is 8821072.

It can be written as a sum of positive squares in 2 ways, for example, as 21233664 + 5779216 = 4608^2 + 2404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 168751 + ... + 168910.

Almost surely, 2^27012880 is an apocalyptic number.

27012880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27012880 is an abundant number, since it is smaller than the sum of its proper divisors (35792252).

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

27012880 is a wasteful number, since it uses less digits than its factorization.

27012880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337674 (or 337668 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 27012880 is about 5197.3916535124. The cubic root of 27012880 is about 300.0476961202.

The spelling of 27012880 in words is "twenty-seven million, twelve thousand, eight hundred eighty".