8921712 has 20 divisors (see below), whose sum is σ = 23047880. Its totient is φ = 2973888.

The previous prime is 8921701. The next prime is 8921729. The reversal of 8921712 is 2171298.

It is a self number, because there is not a number n which added to its sum of digits gives 8921712.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92887 + ... + 92982.

It is an arithmetic number, because the mean of its divisors is an integer number (1152394).

Almost surely, 2^8921712 is an apocalyptic number.

It is an amenable number.

8921712 is an abundant number, since it is smaller than the sum of its proper divisors (14126168).

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

8921712 is a wasteful number, since it uses less digits than its factorization.

8921712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185880 (or 185874 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 8921712 is about 2986.9235008617. The cubic root of 8921712 is about 207.4034931297.

The spelling of 8921712 in words is "eight million, nine hundred twenty-one thousand, seven hundred twelve".