8990720 has 52 divisors (see below), whose sum is σ = 21624240. Its totient is φ = 3588096.

The previous prime is 8990719. The next prime is 8990731. The reversal of 8990720 is 270998.

It is a super-2 number, since 2×8990720² = 161666092236800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20261 + ... + 20699.

Almost surely, 2^8990720 is an apocalyptic number.

8990720 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 8990720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10812120).

8990720 is an abundant number, since it is smaller than the sum of its proper divisors (12633520).

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

8990720 is an equidigital number, since it uses as much as digits as its factorization.

8990720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 8990720 is about 2998.4529344314. The cubic root of 8990720 is about 207.9368644672.

It can be divided in two parts, 89 and 90720, that added together give a palindrome (90809).

The spelling of 8990720 in words is "eight million, nine hundred ninety thousand, seven hundred twenty".