28828717632 has 672 divisors, whose sum is σ = 103735632000. Its totient is φ = 7569469440.

The previous prime is 28828717627. The next prime is 28828717649. The reversal of 28828717632 is 23671782882.

Its product of digits (3612672) is a multiple of the sum of its prime factors (196).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 264483594 + ... + 264483702.

It is an arithmetic number, because the mean of its divisors is an integer number (154368500).

Almost surely, 2^28828717632 is an apocalyptic number.

28828717632 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28828717632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51867816000).

28828717632 is an abundant number, since it is smaller than the sum of its proper divisors (74906914368).

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

28828717632 is a wasteful number, since it uses less digits than its factorization.

28828717632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 157 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 28828717632 in words is "twenty-eight billion, eight hundred twenty-eight million, seven hundred seventeen thousand, six hundred thirty-two".