27642646 has 16 divisors (see below), whose sum is σ = 44136576. Its totient is φ = 12939136.

The previous prime is 27642631. The next prime is 27642647. The reversal of 27642646 is 64624672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27642647) 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, 4635 + ... + 8761.

It is an arithmetic number, because the mean of its divisors is an integer number (2758536).

Almost surely, 2^27642646 is an apocalyptic number.

27642646 is a deficient number, since it is larger than the sum of its proper divisors (16493930).

27642646 is a wasteful number, since it uses less digits than its factorization.

27642646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4343.

The product of its digits is 96768, while the sum is 37.

The square root of 27642646 is about 5257.6274116753. The cubic root of 27642646 is about 302.3615321461.

The spelling of 27642646 in words is "twenty-seven million, six hundred forty-two thousand, six hundred forty-six".