27689146 has 8 divisors (see below), whose sum is σ = 42000660. Its totient is φ = 13688928.

The previous prime is 27689111. The next prime is 27689147. The reversal of 27689146 is 64198672.

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 11025 = 5261^2 + 105^2 .

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 (27689147) 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, 77601 + ... + 77956.

Almost surely, 2^27689146 is an apocalyptic number.

27689146 is a deficient number, since it is larger than the sum of its proper divisors (14311514).

27689146 is a wasteful number, since it uses less digits than its factorization.

27689146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155648.

The product of its digits is 145152, while the sum is 43.

The square root of 27689146 is about 5262.0477002779. The cubic root of 27689146 is about 302.5309796836.

The spelling of 27689146 in words is "twenty-seven million, six hundred eighty-nine thousand, one hundred forty-six".