8985720 has 64 divisors (see below), whose sum is σ = 27256320. Its totient is φ = 2369664.

The previous prime is 8985719. The next prime is 8985721. The reversal of 8985720 is 275898.

It is an interprime number because it is at equal distance from previous prime (8985719) and next prime (8985721).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8985721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11997 + ... + 12723.

It is an arithmetic number, because the mean of its divisors is an integer number (425880).

Almost surely, 2^8985720 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 8985720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13628160).

8985720 is an abundant number, since it is smaller than the sum of its proper divisors (18270600).

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

8985720 is a wasteful number, since it uses less digits than its factorization.

8985720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 8985720 is about 2997.6190551836. The cubic root of 8985720 is about 207.8983107468.

The spelling of 8985720 in words is "eight million, nine hundred eighty-five thousand, seven hundred twenty".