28875776832 has 840 divisors, whose sum is σ = 108754103040. Its totient is φ = 7524679680.

The previous prime is 28875776821. The next prime is 28875776849. The reversal of 28875776832 is 23867757882.

28875776832 is a `hidden beast` number, since 28 + 8 + 7 + 577 + 6 + 8 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 28875776832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 149615328 + ... + 149615520.

Almost surely, 2^28875776832 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 28875776832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54377051520).

28875776832 is an abundant number, since it is smaller than the sum of its proper divisors (79878326208).

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

28875776832 is a wasteful number, since it uses less digits than its factorization.

28875776832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281 (or 255 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 63.

The spelling of 28875776832 in words is "twenty-eight billion, eight hundred seventy-five million, seven hundred seventy-six thousand, eight hundred thirty-two".