9898740 has 96 divisors (see below), whose sum is σ = 32175360. Its totient is φ = 2521728.

The previous prime is 9898723. The next prime is 9898769. The reversal of 9898740 is 478989.

9898740 = 645² + 646² + ... + 667².

9898740 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12022 + ... + 12818.

It is an arithmetic number, because the mean of its divisors is an integer number (335160).

Almost surely, 2^9898740 is an apocalyptic number.

9898740 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 9898740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16087680).

9898740 is an abundant number, since it is smaller than the sum of its proper divisors (22276620).

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

9898740 is a wasteful number, since it uses less digits than its factorization.

9898740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838 (or 830 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 9898740 is about 3146.2263109954. The cubic root of 9898740 is about 214.7138070583.

The spelling of 9898740 in words is "nine million, eight hundred ninety-eight thousand, seven hundred forty".