28272013528 has 64 divisors (see below), whose sum is σ = 60904800000. Its totient is φ = 12168144000.

The previous prime is 28272013487. The next prime is 28272013571. The reversal of 28272013528 is 82531027282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4593253 + ... + 4599403.

It is an arithmetic number, because the mean of its divisors is an integer number (951637500).

Almost surely, 2^28272013528 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 28272013528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30452400000).

28272013528 is an abundant number, since it is smaller than the sum of its proper divisors (32632786472).

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

28272013528 is a wasteful number, since it uses less digits than its factorization.

28272013528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8936 (or 8932 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 40.

The spelling of 28272013528 in words is "twenty-eight billion, two hundred seventy-two million, thirteen thousand, five hundred twenty-eight".