27220723 has 4 divisors (see below), whose sum is σ = 28821960. Its totient is φ = 25619488.

The previous prime is 27220703. The next prime is 27220729. The reversal of 27220723 is 32702272.

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

It is a cyclic number.

It is not a de Polignac number, because 27220723 - 2⁹ = 27220211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27220729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 800593 + ... + 800626.

It is an arithmetic number, because the mean of its divisors is an integer number (7205490).

Almost surely, 2^27220723 is an apocalyptic number.

27220723 is a deficient number, since it is larger than the sum of its proper divisors (1601237).

27220723 is a wasteful number, since it uses less digits than its factorization.

27220723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601236.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 27220723 is about 5217.3482728298. The cubic root of 27220723 is about 300.8152750078.

Adding to 27220723 its reverse (32702272), we get a palindrome (59922995).

The spelling of 27220723 in words is "twenty-seven million, two hundred twenty thousand, seven hundred twenty-three".