8900720 has 80 divisors (see below), whose sum is σ = 22165248. Its totient is φ = 3317760.

The previous prime is 8900713. The next prime is 8900737. The reversal of 8900720 is 270098.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 8900720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91712 + ... + 91808.

Almost surely, 2^8900720 is an apocalyptic number.

8900720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8900720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11082624).

8900720 is an abundant number, since it is smaller than the sum of its proper divisors (13264528).

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

8900720 is a wasteful number, since it uses less digits than its factorization.

8900720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 8900720 is about 2983.4074478690. The cubic root of 8900720 is about 207.2406980177.

The spelling of 8900720 in words is "eight million, nine hundred thousand, seven hundred twenty".