27020009 has 4 divisors (see below), whose sum is σ = 28194816. Its totient is φ = 25845204.

The previous prime is 27019981. The next prime is 27020023. The reversal of 27020009 is 90002072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27020009 - 2⁸ = 27019753 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (27020309) 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 3 ways as a sum of consecutive naturals, for example, 587369 + ... + 587414.

It is an arithmetic number, because the mean of its divisors is an integer number (7048704).

Almost surely, 2^27020009 is an apocalyptic number.

It is an amenable number.

27020009 is a deficient number, since it is larger than the sum of its proper divisors (1174807).

27020009 is a wasteful number, since it uses less digits than its factorization.

27020009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174806.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 27020009 is about 5198.0774330516. The cubic root of 27020009 is about 300.0740891086.

The spelling of 27020009 in words is "twenty-seven million, twenty thousand, nine".