28327986 has 24 divisors (see below), whose sum is σ = 63358464. Its totient is φ = 9137880.

The previous prime is 28327979. The next prime is 28328063. The reversal of 28327986 is 68972382.

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, 24826 + ... + 25941.

It is an arithmetic number, because the mean of its divisors is an integer number (2639936).

Almost surely, 2^28327986 is an apocalyptic number.

28327986 is an abundant number, since it is smaller than the sum of its proper divisors (35030478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28327986 is a wasteful number, since it uses less digits than its factorization.

28327986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50806 (or 50803 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 28327986 is about 5322.4041560182. The cubic root of 28327986 is about 304.8399626235.

The spelling of 28327986 in words is "twenty-eight million, three hundred twenty-seven thousand, nine hundred eighty-six".