27883987 has 2 divisors, whose sum is σ = 27883988. Its totient is φ = 27883986.

The previous prime is 27883969. The next prime is 27883991. The reversal of 27883987 is 78938872.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27883987 is a prime.

It is not a weakly prime, because it can be changed into another prime (27883907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13941993 + 13941994.

It is an arithmetic number, because the mean of its divisors is an integer number (13941994).

Almost surely, 2^27883987 is an apocalyptic number.

27883987 is a deficient number, since it is larger than the sum of its proper divisors (1).

27883987 is an equidigital number, since it uses as much as digits as its factorization.

27883987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 52.

The square root of 27883987 is about 5280.5290454650. The cubic root of 27883987 is about 303.2389311624.

The spelling of 27883987 in words is "twenty-seven million, eight hundred eighty-three thousand, nine hundred eighty-seven".