27928145 has 8 divisors (see below), whose sum is σ = 38301504. Its totient is φ = 19150704.

The previous prime is 27928139. The next prime is 27928151. The reversal of 27928145 is 54182972.

It is an interprime number because it is at equal distance from previous prime (27928139) and next prime (27928151).

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

It is a cyclic number.

It is not a de Polignac number, because 27928145 - 2⁴ = 27928129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27928099 and 27928108.

It is an unprimeable number.

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, 398939 + ... + 399008.

It is an arithmetic number, because the mean of its divisors is an integer number (4787688).

Almost surely, 2^27928145 is an apocalyptic number.

It is an amenable number.

27928145 is a deficient number, since it is larger than the sum of its proper divisors (10373359).

27928145 is an equidigital number, since it uses as much as digits as its factorization.

27928145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797959.

The product of its digits is 40320, while the sum is 38.

The square root of 27928145 is about 5284.7086012381. The cubic root of 27928145 is about 303.3989197899.

The spelling of 27928145 in words is "twenty-seven million, nine hundred twenty-eight thousand, one hundred forty-five".