27923145 has 8 divisors (see below), whose sum is σ = 44677056. Its totient is φ = 14892336.

The previous prime is 27923131. The next prime is 27923149. The reversal of 27923145 is 54132972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27923145 - 2⁷ = 27923017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27923149) 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 7 ways as a sum of consecutive naturals, for example, 930757 + ... + 930786.

It is an arithmetic number, because the mean of its divisors is an integer number (5584632).

Almost surely, 2^27923145 is an apocalyptic number.

It is an amenable number.

27923145 is a deficient number, since it is larger than the sum of its proper divisors (16753911).

27923145 is a wasteful number, since it uses less digits than its factorization.

27923145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1861551.

The product of its digits is 15120, while the sum is 33.

The square root of 27923145 is about 5284.2355170829. The cubic root of 27923145 is about 303.3808127855.

The spelling of 27923145 in words is "twenty-seven million, nine hundred twenty-three thousand, one hundred forty-five".