27990277 has 8 divisors (see below), whose sum is σ = 32513792. Its totient is φ = 23598000.

The previous prime is 27990271. The next prime is 27990289. The reversal of 27990277 is 77209972.

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

It is a cyclic number.

It is not a de Polignac number, because 27990277 - 2³ = 27990269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27990271) 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, 32349 + ... + 33202.

It is an arithmetic number, because the mean of its divisors is an integer number (4064224).

Almost surely, 2^27990277 is an apocalyptic number.

It is an amenable number.

27990277 is a deficient number, since it is larger than the sum of its proper divisors (4523515).

27990277 is an equidigital number, since it uses as much as digits as its factorization.

27990277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65619.

The product of its (nonzero) digits is 111132, while the sum is 43.

The square root of 27990277 is about 5290.5838052147. The cubic root of 27990277 is about 303.6237446010.

The spelling of 27990277 in words is "twenty-seven million, nine hundred ninety thousand, two hundred seventy-seven".