28073388672 has 256 divisors, whose sum is σ = 96897715200. Its totient is φ = 7834143744.

The previous prime is 28073388671. The next prime is 28073388689. The reversal of 28073388672 is 27688337082.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28073388671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1026763 + ... + 1053749.

It is an arithmetic number, because the mean of its divisors is an integer number (378506700).

Almost surely, 2^28073388672 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 28073388672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48448857600).

28073388672 is an abundant number, since it is smaller than the sum of its proper divisors (68824326528).

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

28073388672 is a wasteful number, since it uses less digits than its factorization.

28073388672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27060 (or 27042 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 54.

The spelling of 28073388672 in words is "twenty-eight billion, seventy-three million, three hundred eighty-eight thousand, six hundred seventy-two".