9880000 has 140 divisors (see below), whose sum is σ = 27772360. Its totient is φ = 3456000.

The previous prime is 9879997. The next prime is 9880001. The reversal of 9880000 is 889.

It is a super-2 number, since 2×9880000² = 195228800000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9880001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 519991 + ... + 520009.

It is an arithmetic number, because the mean of its divisors is an integer number (198374).

Almost surely, 2^9880000 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 9880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13886180).

9880000 is an abundant number, since it is smaller than the sum of its proper divisors (17892360).

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

9880000 is a wasteful number, since it uses less digits than its factorization.

9880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64 (or 39 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 9880000 is about 3143.2467291003. The cubic root of 9880000 is about 214.5782248656.

Adding to 9880000 its reverse (889), we get a palindrome (9880889).

It can be divided in two parts, 98 and 80000, that multiplied together give a square (7840000 = 2800²).

The spelling of 9880000 in words is "nine million, eight hundred eighty thousand".