27948385 has 4 divisors (see below), whose sum is σ = 33538068. Its totient is φ = 22358704.

The previous prime is 27948343. The next prime is 27948419. The reversal of 27948385 is 58384972.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 21307456 = 2577^2 + 4616^2 .

It is a cyclic number.

It is not a de Polignac number, because 27948385 - 2⁹ = 27947873 is a prime.

It is a super-2 number, since 2×27948385² = 1562224448216450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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, 2794834 + ... + 2794843.

It is an arithmetic number, because the mean of its divisors is an integer number (8384517).

Almost surely, 2^27948385 is an apocalyptic number.

It is an amenable number.

27948385 is a deficient number, since it is larger than the sum of its proper divisors (5589683).

27948385 is an equidigital number, since it uses as much as digits as its factorization.

27948385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589682.

The product of its digits is 483840, while the sum is 46.

The square root of 27948385 is about 5286.6232133565. The cubic root of 27948385 is about 303.4721948713.

The spelling of 27948385 in words is "twenty-seven million, nine hundred forty-eight thousand, three hundred eighty-five".