28904733312 has 256 divisors, whose sum is σ = 97548165120. Its totient is φ = 7377039360.

The previous prime is 28904733301. The next prime is 28904733349. The reversal of 28904733312 is 21333740982.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1069923 + ... + 1096605.

It is an arithmetic number, because the mean of its divisors is an integer number (381047520).

Almost surely, 2^28904733312 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 28904733312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48774082560).

28904733312 is an abundant number, since it is smaller than the sum of its proper divisors (68643431808).

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

28904733312 is a wasteful number, since it uses less digits than its factorization.

28904733312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26751 (or 26739 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The spelling of 28904733312 in words is "twenty-eight billion, nine hundred four million, seven hundred thirty-three thousand, three hundred twelve".