9806220 has 72 divisors (see below), whose sum is σ = 30021264. Its totient is φ = 2590848.

The previous prime is 9806207. The next prime is 9806227. The reversal of 9806220 is 226089.

9806220 = T₁₂₃ + T₁₂₄ + ... + T₃₉₂.

It is not an unprimeable number, because it can be changed into a prime (9806227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28087 + ... + 28433.

It is an arithmetic number, because the mean of its divisors is an integer number (416962).

Almost surely, 2^9806220 is an apocalyptic number.

9806220 is a gapful number since it is divisible by the number (90) 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 9806220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15010632).

9806220 is an abundant number, since it is smaller than the sum of its proper divisors (20215044).

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

9806220 is a wasteful number, since it uses less digits than its factorization.

9806220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 9806220 is about 3131.4884639736. The cubic root of 9806220 is about 214.0427608381.

The spelling of 9806220 in words is "nine million, eight hundred six thousand, two hundred twenty".