10556840328 has 64 divisors (see below), whose sum is σ = 26980335360. Its totient is φ = 3440664576.

The previous prime is 10556840321. The next prime is 10556840339. The reversal of 10556840328 is 82304865501.

It is a super-2 number, since 2×10556840328² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10556840328.

It is not an unprimeable number, because it can be changed into a prime (10556840321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1296526 + ... + 1304642.

It is an arithmetic number, because the mean of its divisors is an integer number (421567740).

Almost surely, 2^10556840328 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 10556840328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13490167680).

10556840328 is an abundant number, since it is smaller than the sum of its proper divisors (16423495032).

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

10556840328 is a wasteful number, since it uses less digits than its factorization.

10556840328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9326 (or 9322 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The spelling of 10556840328 in words is "ten billion, five hundred fifty-six million, eight hundred forty thousand, three hundred twenty-eight".