Base | Representation |
---|---|
bin | 11010001010001010… |
… | …100000001111010010 |
3 | 2200111111011202001010 |
4 | 122022022200033102 |
5 | 430010440004244 |
6 | 20523043151350 |
7 | 2013020320566 |
oct | 321212401722 |
9 | 80444152033 |
10 | 28087813074 |
11 | 10a03924762 |
12 | 553a675556 |
13 | 2858185449 |
14 | 15064cb6a6 |
15 | ae5d0eeb9 |
hex | 68a2a03d2 |
28087813074 has 8 divisors (see below), whose sum is σ = 56175626160. Its totient is φ = 9362604356.
The previous prime is 28087813063. The next prime is 28087813081. The reversal of 28087813074 is 47031878082.
It is a happy number.
It is a sphenic number, since it is the product of 3 distinct primes.
28087813074 is an admirable number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2340651084 + ... + 2340651095.
It is an arithmetic number, because the mean of its divisors is an integer number (7021953270).
Almost surely, 228087813074 is an apocalyptic number.
28087813074 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
28087813074 is a wasteful number, since it uses less digits than its factorization.
28087813074 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4681302184.
The product of its (nonzero) digits is 602112, while the sum is 48.
The spelling of 28087813074 in words is "twenty-eight billion, eighty-seven million, eight hundred thirteen thousand, seventy-four".
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