27934987 has 4 divisors (see below), whose sum is σ = 28060480. Its totient is φ = 27809496.

The previous prime is 27934957. The next prime is 27935003. The reversal of 27934987 is 78943972.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27934987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27934987.

It is not an unprimeable number, because it can be changed into a prime (27934957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62412 + ... + 62857.

It is an arithmetic number, because the mean of its divisors is an integer number (7015120).

Almost surely, 2^27934987 is an apocalyptic number.

27934987 is a deficient number, since it is larger than the sum of its proper divisors (125493).

27934987 is a wasteful number, since it uses less digits than its factorization.

27934987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125492.

The product of its digits is 762048, while the sum is 49.

The square root of 27934987 is about 5285.3559009777. The cubic root of 27934987 is about 303.4236939131.

The spelling of 27934987 in words is "twenty-seven million, nine hundred thirty-four thousand, nine hundred eighty-seven".