28851430434816 has 192 divisors, whose sum is σ = 83920140158400. Its totient is φ = 8741899468800.

The previous prime is 28851430434779. The next prime is 28851430434817. The reversal of 28851430434816 is 61843403415882.

It is a tau number, because it is divible by the number of its divisors (192).

It is not an unprimeable number, because it can be changed into a prime (28851430434817) 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, 839443680 + ... + 839478048.

It is an arithmetic number, because the mean of its divisors is an integer number (437084063325).

Almost surely, 2^{28851430434816} 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 28851430434816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41960070079200).

28851430434816 is an abundant number, since it is smaller than the sum of its proper divisors (55068709723584).

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

28851430434816 is a wasteful number, since it uses less digits than its factorization.

28851430434816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46826 (or 46806 counting only the distinct ones).

The product of its (nonzero) digits is 17694720, while the sum is 57.

The spelling of 28851430434816 in words is "twenty-eight trillion, eight hundred fifty-one billion, four hundred thirty million, four hundred thirty-four thousand, eight hundred sixteen".