28028801832 has 64 divisors (see below), whose sum is σ = 72563212800. Its totient is φ = 9011439360.

The previous prime is 28028801821. The next prime is 28028801837. The reversal of 28028801832 is 23810882082.

It is a super-2 number, since 2×28028801832² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28028801837) 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, 669418 + ... + 710054.

It is an arithmetic number, because the mean of its divisors is an integer number (1133800200).

Almost surely, 2^28028801832 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 28028801832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36281606400).

28028801832 is an abundant number, since it is smaller than the sum of its proper divisors (44534410968).

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

28028801832 is a wasteful number, since it uses less digits than its factorization.

28028801832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41666 (or 41662 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The spelling of 28028801832 in words is "twenty-eight billion, twenty-eight million, eight hundred one thousand, eight hundred thirty-two".