27873987 has 8 divisors (see below), whose sum is σ = 38169936. Its totient is φ = 18080352.

The previous prime is 27873977. The next prime is 27874013. The reversal of 27873987 is 78937872.

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

It is a de Polignac number, because none of the positive numbers 2^k-27873987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27873947) 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, 125448 + ... + 125669.

It is an arithmetic number, because the mean of its divisors is an integer number (4771242).

Almost surely, 2^27873987 is an apocalyptic number.

27873987 is a deficient number, since it is larger than the sum of its proper divisors (10295949).

27873987 is a wasteful number, since it uses less digits than its factorization.

27873987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251157.

The product of its digits is 1185408, while the sum is 51.

The square root of 27873987 is about 5279.5820857337. The cubic root of 27873987 is about 303.2026767597.

The spelling of 27873987 in words is "twenty-seven million, eight hundred seventy-three thousand, nine hundred eighty-seven".