27820006 has 4 divisors (see below), whose sum is σ = 41730012. Its totient is φ = 13910002.

The previous prime is 27820003. The next prime is 27820021. The reversal of 27820006 is 60002872.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27820003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6955000 + ... + 6955003.

It is an arithmetic number, because the mean of its divisors is an integer number (10432503).

Almost surely, 2^27820006 is an apocalyptic number.

27820006 is a deficient number, since it is larger than the sum of its proper divisors (13910006).

27820006 is a wasteful number, since it uses less digits than its factorization.

27820006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13910005.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 27820006 is about 5274.4673664741. The cubic root of 27820006 is about 303.0068219808.

Adding to 27820006 its reverse (60002872), we get a palindrome (87822878).

The spelling of 27820006 in words is "twenty-seven million, eight hundred twenty thousand, six".