27987073 has 2 divisors, whose sum is σ = 27987074. Its totient is φ = 27987072.

The previous prime is 27987061. The next prime is 27987097. The reversal of 27987073 is 37078972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 11242609 = 4092^2 + 3353^2 .

It is a cyclic number.

It is not a de Polignac number, because 27987073 - 2²¹ = 25889921 is a prime.

It is not a weakly prime, because it can be changed into another prime (27987013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13993536 + 13993537.

It is an arithmetic number, because the mean of its divisors is an integer number (13993537).

Almost surely, 2^27987073 is an apocalyptic number.

It is an amenable number.

27987073 is a deficient number, since it is larger than the sum of its proper divisors (1).

27987073 is an equidigital number, since it uses as much as digits as its factorization.

27987073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 27987073 is about 5290.2809944274. The cubic root of 27987073 is about 303.6121590589.

The spelling of 27987073 in words is "twenty-seven million, nine hundred eighty-seven thousand, seventy-three".