8727978 has 32 divisors (see below), whose sum is σ = 20361600. Its totient is φ = 2493120.

The previous prime is 8727937. The next prime is 8727989. The reversal of 8727978 is 8797278.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63 + ... + 4178.

It is an arithmetic number, because the mean of its divisors is an integer number (636300).

Almost surely, 2^8727978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8727978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10180800).

8727978 is an abundant number, since it is smaller than the sum of its proper divisors (11633622).

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

8727978 is a wasteful number, since it uses less digits than its factorization.

8727978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267 (or 4253 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The square root of 8727978 is about 2954.3151490659. The cubic root of 8727978 is about 205.8912455767.

The spelling of 8727978 in words is "eight million, seven hundred twenty-seven thousand, nine hundred seventy-eight".