27985711 has 8 divisors (see below), whose sum is σ = 30237984. Its totient is φ = 25747680.

The previous prime is 27985709. The next prime is 27985717. The reversal of 27985711 is 11758972.

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

It is a cyclic number.

It is not a de Polignac number, because 27985711 - 2¹ = 27985709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 726 + ... + 7516.

It is an arithmetic number, because the mean of its divisors is an integer number (3779748).

Almost surely, 2^27985711 is an apocalyptic number.

27985711 is a deficient number, since it is larger than the sum of its proper divisors (2252273).

27985711 is a wasteful number, since it uses less digits than its factorization.

27985711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121.

The product of its digits is 35280, while the sum is 40.

The square root of 27985711 is about 5290.1522662396. The cubic root of 27985711 is about 303.6072338509.

The spelling of 27985711 in words is "twenty-seven million, nine hundred eighty-five thousand, seven hundred eleven".