Base | Representation |
---|---|
bin | 11010111000110010… |
… | …010011110110111100 |
3 | 2202111222222221212111 |
4 | 122320302103312330 |
5 | 433111210000220 |
6 | 21132424143404 |
7 | 2041265644246 |
oct | 327062236674 |
9 | 82458887774 |
10 | 28870000060 |
11 | 112753a9390 |
12 | 5718607b64 |
13 | 295123c495 |
14 | 157c33b096 |
15 | b3e81915a |
hex | 6b8c93dbc |
28870000060 has 24 divisors (see below), whose sum is σ = 66138546096. Its totient is φ = 10498181760.
The previous prime is 28870000051. The next prime is 28870000067. The reversal of 28870000060 is 6000007882.
It is a junction number, because it is equal to n+sod(n) for n = 28869999977 and 28870000031.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (28870000067) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65613417 + ... + 65613856.
It is an arithmetic number, because the mean of its divisors is an integer number (2755772754).
Almost surely, 228870000060 is an apocalyptic number.
28870000060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
28870000060 is an abundant number, since it is smaller than the sum of its proper divisors (37268546036).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28870000060 is a wasteful number, since it uses less digits than its factorization.
28870000060 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 131227293 (or 131227291 counting only the distinct ones).
The product of its (nonzero) digits is 5376, while the sum is 31.
The spelling of 28870000060 in words is "twenty-eight billion, eight hundred seventy million, sixty", and thus it is an aban number.
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