28947034920 has 256 divisors, whose sum is σ = 96944947200. Its totient is φ = 6880481280.

The previous prime is 28947034871. The next prime is 28947034927. The reversal of 28947034920 is 2943074982.

It is a self number, because there is not a number n which added to its sum of digits gives 28947034920.

It is not an unprimeable number, because it can be changed into a prime (28947034927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2967411 + ... + 2977149.

It is an arithmetic number, because the mean of its divisors is an integer number (378691200).

Almost surely, 2^28947034920 is an apocalyptic number.

28947034920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28947034920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48472473600).

28947034920 is an abundant number, since it is smaller than the sum of its proper divisors (67997912280).

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

28947034920 is a wasteful number, since it uses less digits than its factorization.

28947034920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9848 (or 9844 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 28947034920 in words is "twenty-eight billion, nine hundred forty-seven million, thirty-four thousand, nine hundred twenty".