27280987 has 2 divisors, whose sum is σ = 27280988. Its totient is φ = 27280986.

The previous prime is 27280973. The next prime is 27281003. The reversal of 27280987 is 78908272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27280987 - 2¹⁵ = 27248219 is a prime.

It is not a weakly prime, because it can be changed into another prime (27280907) 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 as a sum of consecutive naturals, namely, 13640493 + 13640494.

It is an arithmetic number, because the mean of its divisors is an integer number (13640494).

Almost surely, 2^27280987 is an apocalyptic number.

27280987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27280987 is an equidigital number, since it uses as much as digits as its factorization.

27280987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 27280987 is about 5223.1204274839. The cubic root of 27280987 is about 301.0371031844.

The spelling of 27280987 in words is "twenty-seven million, two hundred eighty thousand, nine hundred eighty-seven".