9898144256 has 480 divisors, whose sum is σ = 28213194240. Its totient is φ = 3406233600.

The previous prime is 9898144253. The next prime is 9898144279. The reversal of 9898144256 is 6524418989.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (9898144253) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111215060 + ... + 111215148.

It is an arithmetic number, because the mean of its divisors is an integer number (58777488).

Almost surely, 2^9898144256 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 9898144256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14106597120).

9898144256 is an abundant number, since it is smaller than the sum of its proper divisors (18315049984).

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

9898144256 is a wasteful number, since it uses less digits than its factorization.

9898144256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176 (or 153 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 56.

The square root of 9898144256 is about 99489.4178091318. The cubic root of 9898144256 is about 2147.0949953944.

The spelling of 9898144256 in words is "nine billion, eight hundred ninety-eight million, one hundred forty-four thousand, two hundred fifty-six".