9807798 has 128 divisors (see below), whose sum is σ = 27869184. Its totient is φ = 2217600.

The previous prime is 9807797. The next prime is 9807799. The reversal of 9807798 is 8977089.

It is an interprime number because it is at equal distance from previous prime (9807797) and next prime (9807799).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9807797) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 138103 + ... + 138173.

It is an arithmetic number, because the mean of its divisors is an integer number (217728).

Almost surely, 2^9807798 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9807798, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13934592).

9807798 is an abundant number, since it is smaller than the sum of its proper divisors (18061386).

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

9807798 is a wasteful number, since it uses less digits than its factorization.

9807798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 9807798 is about 3131.7404106982. The cubic root of 9807798 is about 214.0542413529.

It can be divided in two parts, 980 and 7798, that added together give a palindrome (8778).

The spelling of 9807798 in words is "nine million, eight hundred seven thousand, seven hundred ninety-eight".