9890235888 has 160 divisors (see below), whose sum is σ = 28789824000. Its totient is φ = 2902901760.

The previous prime is 9890235841. The next prime is 9890235917. The reversal of 9890235888 is 8885320989.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7160958 + ... + 7162338.

It is an arithmetic number, because the mean of its divisors is an integer number (179936400).

Almost surely, 2^9890235888 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 9890235888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14394912000).

9890235888 is an abundant number, since it is smaller than the sum of its proper divisors (18899588112).

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

9890235888 is a wasteful number, since it uses less digits than its factorization.

9890235888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1927 (or 1921 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The square root of 9890235888 is about 99449.6650974753. The cubic root of 9890235888 is about 2146.5230180915.

The spelling of 9890235888 in words is "nine billion, eight hundred ninety million, two hundred thirty-five thousand, eight hundred eighty-eight".