8731992 has 16 divisors (see below), whose sum is σ = 21830040. Its totient is φ = 2910656.

The previous prime is 8731991. The next prime is 8731993. The reversal of 8731992 is 2991378.

It is an interprime number because it is at equal distance from previous prime (8731991) and next prime (8731993).

It is a self number, because there is not a number n which added to its sum of digits gives 8731992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8731991) 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 3 ways as a sum of consecutive naturals, for example, 181893 + ... + 181940.

Almost surely, 2^8731992 is an apocalyptic number.

It is an amenable number.

8731992 is an abundant number, since it is smaller than the sum of its proper divisors (13098048).

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

8731992 is a wasteful number, since it uses less digits than its factorization.

8731992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363842 (or 363838 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 8731992 is about 2954.9944162384. The cubic root of 8731992 is about 205.9228038902.

The spelling of 8731992 in words is "eight million, seven hundred thirty-one thousand, nine hundred ninety-two".