9880020 has 72 divisors (see below), whose sum is σ = 30270240. Its totient is φ = 2608320.

The previous prime is 9880001. The next prime is 9880027. The reversal of 9880020 is 200889.

It is a super-2 number, since 2×9880020² = 195229590400800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9880027) 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 23 ways as a sum of consecutive naturals, for example, 23371 + ... + 23789.

It is an arithmetic number, because the mean of its divisors is an integer number (420420).

Almost surely, 2^9880020 is an apocalyptic number.

9880020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9880020 is the 1572-nd decagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9880020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15135120).

9880020 is an abundant number, since it is smaller than the sum of its proper divisors (20390220).

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

9880020 is a wasteful number, since it uses less digits than its factorization.

9880020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565 (or 560 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 9880020 is about 3143.2499105225. The cubic root of 9880020 is about 214.5783696551.

The spelling of 9880020 in words is "nine million, eight hundred eighty thousand, twenty".