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28930672512 = 273273211347
BaseRepresentation
bin11010111100011001…
…110000011110000000
32202200020011102211100
4122330121300132000
5433222223010022
621142432414400
72042633442000
oct327431603600
982606142740
1028930672512
11112a6679505
1257349a7400
132960993541
141586412000
15b44d011ac
hex6bc670780

28930672512 has 384 divisors, whose sum is σ = 97826976000. Its totient is φ = 8203023360.

The previous prime is 28930672493. The next prime is 28930672549. The reversal of 28930672512 is 21527603982.

It is a tau number, because it is divible by the number of its divisors (384).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83373523 + ... + 83373869.

It is an arithmetic number, because the mean of its divisors is an integer number (254757750).

Almost surely, 228930672512 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 28930672512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48913488000).

28930672512 is an abundant number, since it is smaller than the sum of its proper divisors (68896303488).

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

28930672512 is a wasteful number, since it uses less digits than its factorization.

28930672512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 570 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 28930672512 in words is "twenty-eight billion, nine hundred thirty million, six hundred seventy-two thousand, five hundred twelve".