27020913 has 4 divisors (see below), whose sum is σ = 36027888. Its totient is φ = 18013940.

The previous prime is 27020909. The next prime is 27020941. The reversal of 27020913 is 31902072.

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 27020913 - 2² = 27020909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27020963) 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, 4503483 + ... + 4503488.

It is an arithmetic number, because the mean of its divisors is an integer number (9006972).

Almost surely, 2^27020913 is an apocalyptic number.

It is an amenable number.

27020913 is a deficient number, since it is larger than the sum of its proper divisors (9006975).

27020913 is an equidigital number, since it uses as much as digits as its factorization.

27020913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9006974.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 27020913 is about 5198.1643875507. The cubic root of 27020913 is about 300.0774355663.

Adding to 27020913 its reverse (31902072), we get a palindrome (58922985).

The spelling of 27020913 in words is "twenty-seven million, twenty thousand, nine hundred thirteen".