9855027028 has 96 divisors (see below), whose sum is σ = 22644357120. Its totient is φ = 3638701440.

The previous prime is 9855026981. The next prime is 9855027047. The reversal of 9855027028 is 8207205589.

9855027028 is a nontrivial binomial coefficient, being equal to C(140393, 2).

It is a super-2 number, since 2×9855027028² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

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, 765775 + ... + 778537.

It is an arithmetic number, because the mean of its divisors is an integer number (235878720).

Almost surely, 2^9855027028 is an apocalyptic number.

9855027028 is the 140392-nd triangular number.

9855027028 is the 46798-th centered nonagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9855027028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11322178560).

9855027028 is an abundant number, since it is smaller than the sum of its proper divisors (12789330092).

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

9855027028 is a wasteful number, since it uses less digits than its factorization.

9855027028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12917 (or 12915 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 9855027028 is about 99272.4887771028. The cubic root of 9855027028 is about 2143.9728096374.

The spelling of 9855027028 in words is "nine billion, eight hundred fifty-five million, twenty-seven thousand, twenty-eight".