27820642 has 8 divisors (see below), whose sum is σ = 42121296. Its totient is φ = 13780212.

The previous prime is 27820627. The next prime is 27820691. The reversal of 27820642 is 24602872.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64788 + ... + 65215.

It is an arithmetic number, because the mean of its divisors is an integer number (5265162).

Almost surely, 2^27820642 is an apocalyptic number.

27820642 is a deficient number, since it is larger than the sum of its proper divisors (14300654).

27820642 is a wasteful number, since it uses less digits than its factorization.

27820642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130112.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 27820642 is about 5274.5276565774. The cubic root of 27820642 is about 303.0091310010.

The spelling of 27820642 in words is "twenty-seven million, eight hundred twenty thousand, six hundred forty-two".