27980595 has 24 divisors (see below), whose sum is σ = 48658896. Its totient is φ = 14874048.

The previous prime is 27980593. The next prime is 27980599. The reversal of 27980595 is 59508972.

It is a happy number.

It is not a de Polignac number, because 27980595 - 2¹ = 27980593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27980595.

It is not an unprimeable number, because it can be changed into a prime (27980591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15952 + ... + 17618.

It is an arithmetic number, because the mean of its divisors is an integer number (2027454).

Almost surely, 2^27980595 is an apocalyptic number.

27980595 is a deficient number, since it is larger than the sum of its proper divisors (20678301).

27980595 is a wasteful number, since it uses less digits than its factorization.

27980595 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 27980595 is about 5289.6687041818. The cubic root of 27980595 is about 303.5887321559.

The spelling of 27980595 in words is "twenty-seven million, nine hundred eighty thousand, five hundred ninety-five".