27995005 has 32 divisors (see below), whose sum is σ = 37830240. Its totient is φ = 19783680.

The previous prime is 27995003. The next prime is 27995029. The reversal of 27995005 is 50059972.

It can be written as a sum of positive squares in 16 ways, for example, as 13410244 + 14584761 = 3662^2 + 3819^2 .

It is not a de Polignac number, because 27995005 - 2¹ = 27995003 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27995003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100927 + ... + 101203.

It is an arithmetic number, because the mean of its divisors is an integer number (1182195).

Almost surely, 2^27995005 is an apocalyptic number.

It is an amenable number.

27995005 is a deficient number, since it is larger than the sum of its proper divisors (9835235).

27995005 is a wasteful number, since it uses less digits than its factorization.

27995005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 27995005 is about 5291.0306179420. The cubic root of 27995005 is about 303.6408392543.

The spelling of 27995005 in words is "twenty-seven million, nine hundred ninety-five thousand, five".