Base | Representation |
---|---|
bin | 1010011110101001… |
… | …0111001011100101 |
3 | 21021000222010111001 |
4 | 2213222113023211 |
5 | 21230100300234 |
6 | 1143042113301 |
7 | 126464153560 |
oct | 24752271345 |
9 | 7230863431 |
10 | 2812900069 |
11 | 1213899501 |
12 | 66604b831 |
13 | 35a9c5b15 |
14 | 1c98214d7 |
15 | 116e36d14 |
hex | a7a972e5 |
2812900069 has 16 divisors (see below), whose sum is σ = 3356635392. Its totient is φ = 2304770688.
The previous prime is 2812900067. The next prime is 2812900093. The reversal of 2812900069 is 9600092182.
It is a cyclic number.
It is not a de Polignac number, because 2812900069 - 21 = 2812900067 is a prime.
It is a super-2 number, since 2×28129000692 = 15824813596360409522, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2812900063) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303427 + ... + 312559.
It is an arithmetic number, because the mean of its divisors is an integer number (209789712).
Almost surely, 22812900069 is an apocalyptic number.
It is an amenable number.
2812900069 is a deficient number, since it is larger than the sum of its proper divisors (543735323).
2812900069 is a wasteful number, since it uses less digits than its factorization.
2812900069 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11076.
The product of its (nonzero) digits is 15552, while the sum is 37.
The square root of 2812900069 is about 53036.7803415705. The cubic root of 2812900069 is about 1411.6209698093.
The spelling of 2812900069 in words is "two billion, eight hundred twelve million, nine hundred thousand, sixty-nine".
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