Base | Representation |
---|---|
bin | 10010101000000101… |
… | …11101011110101000 |
3 | 221210220202110210100 |
4 | 21110002331132220 |
5 | 130434444344330 |
6 | 4332142345400 |
7 | 502544366511 |
oct | 112402753650 |
9 | 27726673710 |
10 | 9999996840 |
11 | 42718126a9 |
12 | 1b30b8b260 |
13 | c349b8bc2 |
14 | 6ac161a08 |
15 | 3d7dac060 |
hex | 2540bd7a8 |
9999996840 has 48 divisors (see below), whose sum is σ = 32499990900. Its totient is φ = 2666665728.
The previous prime is 9999996823. The next prime is 9999996841. The reversal of 9999996840 is 486999999.
It can be written as a sum of positive squares in 2 ways, for example, as 9201030084 + 798966756 = 95922^2 + 28266^2 .
It is a Harshad number since it is a multiple of its sum of digits (72).
It is not an unprimeable number, because it can be changed into a prime (9999996841) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13888525 + ... + 13889244.
Almost surely, 29999996840 is an apocalyptic number.
9999996840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.
It is an amenable number.
9999996840 is an abundant number, since it is smaller than the sum of its proper divisors (22499994060).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
9999996840 is a wasteful number, since it uses less digits than its factorization.
9999996840 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 27777786 (or 27777779 counting only the distinct ones).
The product of its (nonzero) digits is 102036672, while the sum is 72.
The square root of 9999996840 is about 99999.9841999988. The cubic root of 9999996840 is about 2154.4344630981.
The spelling of 9999996840 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-six thousand, eight hundred forty".
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