27078987 has 8 divisors (see below), whose sum is σ = 38882704. Its totient is φ = 16663968.

The previous prime is 27078967. The next prime is 27078991. The reversal of 27078987 is 78987072.

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

It is not a de Polignac number, because 27078987 - 2⁶ = 27078923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27078907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347128 + ... + 347205.

It is an arithmetic number, because the mean of its divisors is an integer number (4860338).

Almost surely, 2^27078987 is an apocalyptic number.

27078987 is a deficient number, since it is larger than the sum of its proper divisors (11803717).

27078987 is a wasteful number, since it uses less digits than its factorization.

27078987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694349.

The product of its (nonzero) digits is 395136, while the sum is 48.

The square root of 27078987 is about 5203.7473997111. The cubic root of 27078987 is about 300.2922596330.

The spelling of 27078987 in words is "twenty-seven million, seventy-eight thousand, nine hundred eighty-seven".