Base | Representation |
---|---|
bin | 11010001001110001… |
… | …000110000000000000 |
3 | 2200111000122022202200 |
4 | 122021301012000000 |
5 | 430002233331000 |
6 | 20522244313200 |
7 | 2012606565546 |
oct | 321161060000 |
9 | 80430568680 |
10 | 28081152000 |
11 | 10a00095140 |
12 | 55383a2800 |
13 | 2856992595 |
14 | 1505675d96 |
15 | ae5446500 |
hex | 689c46000 |
28081152000 has 672 divisors, whose sum is σ = 110837679264. Its totient is φ = 6782976000.
The previous prime is 28081151999. The next prime is 28081152079. The reversal of 28081152000 is 25118082.
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, 101375862 + ... + 101376138.
Almost surely, 228081152000 is an apocalyptic number.
28081152000 is a gapful number since it is divisible by the number (20) 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 28081152000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55418839632).
28081152000 is an abundant number, since it is smaller than the sum of its proper divisors (82756527264).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28081152000 is a wasteful number, since it uses less digits than its factorization.
28081152000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 335 (or 298 counting only the distinct ones).
The product of its (nonzero) digits is 1280, while the sum is 27.
It can be divided in two parts, 28081 and 152000, that added together give a palindrome (180081).
The spelling of 28081152000 in words is "twenty-eight billion, eighty-one million, one hundred fifty-two thousand".
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