9980020 has 48 divisors (see below), whose sum is σ = 22453200. Its totient is φ = 3713024.

The previous prime is 9980017. The next prime is 9980021. The reversal of 9980020 is 200899.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 320356 + 9659664 = 566^2 + 3108^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980021) 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, 50562 + ... + 50758.

It is an arithmetic number, because the mean of its divisors is an integer number (467775).

Almost surely, 2^9980020 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 9980020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11226600).

9980020 is an abundant number, since it is smaller than the sum of its proper divisors (12473180).

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

9980020 is a wasteful number, since it uses less digits than its factorization.

9980020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 9980020 is about 3159.1169652294. The cubic root of 9980020 is about 215.2998879854.

The spelling of 9980020 in words is "nine million, nine hundred eighty thousand, twenty".