27928723 has 4 divisors (see below), whose sum is σ = 27982648. Its totient is φ = 27874800.

The previous prime is 27928717. The next prime is 27928729. The reversal of 27928723 is 32782972.

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

It is an interprime number because it is at equal distance from previous prime (27928717) and next prime (27928729).

It is a cyclic number.

It is not a de Polignac number, because 27928723 - 2¹³ = 27920531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27928729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26178 + ... + 27223.

It is an arithmetic number, because the mean of its divisors is an integer number (6995662).

Almost surely, 2^27928723 is an apocalyptic number.

27928723 is a deficient number, since it is larger than the sum of its proper divisors (53925).

27928723 is an equidigital number, since it uses as much as digits as its factorization.

27928723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53924.

The product of its digits is 84672, while the sum is 40.

The square root of 27928723 is about 5284.7632870357. The cubic root of 27928723 is about 303.4010128203.

The spelling of 27928723 in words is "twenty-seven million, nine hundred twenty-eight thousand, seven hundred twenty-three".