27995705 has 8 divisors (see below), whose sum is σ = 33623304. Its totient is φ = 22377600.

The previous prime is 27995689. The next prime is 27995711. The reversal of 27995705 is 50759972.

It can be written as a sum of positive squares in 4 ways, for example, as 32761 + 27962944 = 181^2 + 5288^2 .

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

It is not a de Polignac number, because 27995705 - 2⁴ = 27995689 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9845 + ... + 12365.

It is an arithmetic number, because the mean of its divisors is an integer number (4202913).

Almost surely, 2^27995705 is an apocalyptic number.

It is an amenable number.

27995705 is a deficient number, since it is larger than the sum of its proper divisors (5627599).

27995705 is a wasteful number, since it uses less digits than its factorization.

27995705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4747.

The product of its (nonzero) digits is 198450, while the sum is 44.

The square root of 27995705 is about 5291.0967672119. The cubic root of 27995705 is about 303.6433700250.

The spelling of 27995705 in words is "twenty-seven million, nine hundred ninety-five thousand, seven hundred five".