27989042 has 8 divisors (see below), whose sum is σ = 42009132. Its totient is φ = 13986000.

The previous prime is 27989041. The next prime is 27989047. The reversal of 27989042 is 24098972.

It can be written as a sum of positive squares in 2 ways, for example, as 27363361 + 625681 = 5231^2 + 791^2 .

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

It is not an unprimeable number, because it can be changed into a prime (27989041) 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 3 ways as a sum of consecutive naturals, for example, 1292 + ... + 7592.

Almost surely, 2^27989042 is an apocalyptic number.

27989042 is a deficient number, since it is larger than the sum of its proper divisors (14020090).

27989042 is a wasteful number, since it uses less digits than its factorization.

27989042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8524.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 27989042 is about 5290.4670871295. The cubic root of 27989042 is about 303.6192789927.

The spelling of 27989042 in words is "twenty-seven million, nine hundred eighty-nine thousand, forty-two".