27937642 has 4 divisors (see below), whose sum is σ = 41906466. Its totient is φ = 13968820.

The previous prime is 27937633. The next prime is 27937669. The reversal of 27937642 is 24673972.

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

It can be written as a sum of positive squares in only one way, i.e., 27552001 + 385641 = 5249^2 + 621^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 27937595 and 27937604.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6984409 + ... + 6984412.

Almost surely, 2^27937642 is an apocalyptic number.

27937642 is a deficient number, since it is larger than the sum of its proper divisors (13968824).

27937642 is a wasteful number, since it uses less digits than its factorization.

27937642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13968823.

The product of its digits is 127008, while the sum is 40.

The square root of 27937642 is about 5285.6070606885. The cubic root of 27937642 is about 303.4333062843.

The spelling of 27937642 in words is "twenty-seven million, nine hundred thirty-seven thousand, six hundred forty-two".