27980485 has 12 divisors (see below), whose sum is σ = 36359172. Its totient is φ = 20661888.

The previous prime is 27980471. The next prime is 27980497. The reversal of 27980485 is 58408972.

It can be written as a sum of positive squares in 6 ways, for example, as 8892324 + 19088161 = 2982^2 + 4369^2 .

It is not a de Polignac number, because 27980485 - 2⁷ = 27980357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15712 + ... + 17401.

It is an arithmetic number, because the mean of its divisors is an integer number (3029931).

Almost surely, 2^27980485 is an apocalyptic number.

It is an amenable number.

27980485 is a deficient number, since it is larger than the sum of its proper divisors (8378687).

27980485 is a wasteful number, since it uses less digits than its factorization.

27980485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33144 (or 33131 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 27980485 is about 5289.6583065450. The cubic root of 27980485 is about 303.5883343230.

The spelling of 27980485 in words is "twenty-seven million, nine hundred eighty thousand, four hundred eighty-five".