9877220 has 48 divisors (see below), whose sum is σ = 21772800. Its totient is φ = 3759360.

The previous prime is 9877213. The next prime is 9877223. The reversal of 9877220 is 227789.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (9877223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55091 + ... + 55269.

It is an arithmetic number, because the mean of its divisors is an integer number (453600).

Almost surely, 2^9877220 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 9877220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10886400).

9877220 is an abundant number, since it is smaller than the sum of its proper divisors (11895580).

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

9877220 is a wasteful number, since it uses less digits than its factorization.

9877220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 9877220 is about 3142.8044800783. The cubic root of 9877220 is about 214.5580972197.

The spelling of 9877220 in words is "nine million, eight hundred seventy-seven thousand, two hundred twenty".