8517992 has 32 divisors (see below), whose sum is σ = 18750720. Its totient is φ = 3551040.

The previous prime is 8517991. The next prime is 8518009. The reversal of 8517992 is 2997158.

It is not an unprimeable number, because it can be changed into a prime (8517991) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17 + ... + 4127.

It is an arithmetic number, because the mean of its divisors is an integer number (585960).

Almost surely, 2^8517992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8517992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9375360).

8517992 is an abundant number, since it is smaller than the sum of its proper divisors (10232728).

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

8517992 is a wasteful number, since it uses less digits than its factorization.

8517992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4161 (or 4157 counting only the distinct ones).

The product of its digits is 45360, while the sum is 41.

The square root of 8517992 is about 2918.5599188641. The cubic root of 8517992 is about 204.2266480066.

The spelling of 8517992 in words is "eight million, five hundred seventeen thousand, nine hundred ninety-two".