9778104288 has 144 divisors (see below), whose sum is σ = 28373042880. Its totient is φ = 3193602048.

The previous prime is 9778104277. The next prime is 9778104307. The reversal of 9778104288 is 8824018779.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×9778104288² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3115456 + ... + 3118592.

It is an arithmetic number, because the mean of its divisors is an integer number (197035020).

Almost surely, 2^9778104288 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 9778104288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14186521440).

9778104288 is an abundant number, since it is smaller than the sum of its proper divisors (18594938592).

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

9778104288 is a wasteful number, since it uses less digits than its factorization.

9778104288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369 (or 3358 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 9778104288 is about 98884.2974794279. The cubic root of 9778104288 is about 2138.3800218402.

The spelling of 9778104288 in words is "nine billion, seven hundred seventy-eight million, one hundred four thousand, two hundred eighty-eight".