Base | Representation |
---|---|
bin | 11010100010010100… |
… | …011001110000000000 |
3 | 2201112201201110212000 |
4 | 122202110121300000 |
5 | 431323210423440 |
6 | 21031201104000 |
7 | 2026041011016 |
oct | 324224316000 |
9 | 81481643760 |
10 | 28493061120 |
11 | 110a16545a7 |
12 | 5632328000 |
13 | 28c11136a4 |
14 | 154425a8b6 |
15 | b1b6ad730 |
hex | 6a2519c00 |
28493061120 has 352 divisors, whose sum is σ = 102720752640. Its totient is φ = 7488552960.
The previous prime is 28493061109. The next prime is 28493061127. The reversal of 28493061120 is 2116039482.
28493061120 is a `hidden beast` number, since 2 + 8 + 4 + 9 + 30 + 611 + 2 + 0 = 666.
It is a Harshad number since it is a multiple of its sum of digits (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28493061127) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9813589 + ... + 9816491.
It is an arithmetic number, because the mean of its divisors is an integer number (291820320).
Almost surely, 228493061120 is an apocalyptic number.
28493061120 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 28493061120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51360376320).
28493061120 is an abundant number, since it is smaller than the sum of its proper divisors (74227691520).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28493061120 is a wasteful number, since it uses less digits than its factorization.
28493061120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3008 (or 2984 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
The spelling of 28493061120 in words is "twenty-eight billion, four hundred ninety-three million, sixty-one thousand, one hundred twenty".
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