Base | Representation |
---|---|
bin | 100100011011100000… |
… | …0011100011010001000 |
3 | 21110221010211022120200 |
4 | 1020313000130122020 |
5 | 2240204430241233 |
6 | 55534525052200 |
7 | 5436445235100 |
oct | 1106700343210 |
9 | 243833738520 |
10 | 78232274568 |
11 | 301a6096878 |
12 | 131b39b7060 |
13 | 74b9b35136 |
14 | 3b020a4200 |
15 | 207d1dd313 |
hex | 123701c688 |
78232274568 has 324 divisors, whose sum is σ = 262771371135. Its totient is φ = 20961303552.
The previous prime is 78232274539. The next prime is 78232274573. The reversal of 78232274568 is 86547223287.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
78232274568 is a `hidden beast` number, since 7 + 8 + 2 + 3 + 2 + 2 + 74 + 568 = 666.
It can be written as a sum of positive squares in 5 ways, for example, as 34290891684 + 43941382884 = 185178^2 + 209622^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=197778.
It is a super-2 number, since 2×782322745682 (a number of 23 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 282426846 + ... + 282427122.
Almost surely, 278232274568 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 78232274568
78232274568 is an abundant number, since it is smaller than the sum of its proper divisors (184539096567).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
78232274568 is a wasteful number, since it uses less digits than its factorization.
78232274568 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 614 (or 306 counting only the distinct ones).
The product of its digits is 9031680, while the sum is 54.
The spelling of 78232274568 in words is "seventy-eight billion, two hundred thirty-two million, two hundred seventy-four thousand, five hundred sixty-eight".
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