27728606 has 4 divisors (see below), whose sum is σ = 41592912. Its totient is φ = 13864302.

The previous prime is 27728599. The next prime is 27728621. The reversal of 27728606 is 60682772.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 27728606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6932150 + ... + 6932153.

It is an arithmetic number, because the mean of its divisors is an integer number (10398228).

Almost surely, 2^27728606 is an apocalyptic number.

27728606 is a deficient number, since it is larger than the sum of its proper divisors (13864306).

27728606 is a wasteful number, since it uses less digits than its factorization.

27728606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13864305.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 27728606 is about 5265.7958562785. The cubic root of 27728606 is about 302.6746244897.

It can be divided in two parts, 2772 and 8606, that multiplied together give a palindrome (23855832).

The spelling of 27728606 in words is "twenty-seven million, seven hundred twenty-eight thousand, six hundred six".