28750443750 has 720 divisors, whose sum is σ = 100215617040. Its totient is φ = 6123600000.

The previous prime is 28750443749. The next prime is 28750443773. The reversal of 28750443750 is 5734405782.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 28750443696 and 28750443705.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 471318720 + ... + 471318780.

It is an arithmetic number, because the mean of its divisors is an integer number (139188357).

Almost surely, 2^28750443750 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28750443750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50107808520).

28750443750 is an abundant number, since it is smaller than the sum of its proper divisors (71465173290).

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

28750443750 is an equidigital number, since it uses as much as digits as its factorization.

28750443750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 940800, while the sum is 45.

The spelling of 28750443750 in words is "twenty-eight billion, seven hundred fifty million, four hundred forty-three thousand, seven hundred fifty".