Base | Representation |
---|---|
bin | 1010011101011111… |
… | …0110100101100010 |
3 | 21020200211121122200 |
4 | 2213113312211202 |
5 | 21222330013340 |
6 | 1142350114030 |
7 | 126405004530 |
oct | 24727664542 |
9 | 7220747580 |
10 | 2808047970 |
11 | 1211085002 |
12 | 6644ab916 |
13 | 3599b7460 |
14 | 1c8d1b150 |
15 | 1167c9330 |
hex | a75f6962 |
2808047970 has 96 divisors (see below), whose sum is σ = 8985779712. Its totient is φ = 592465536.
The previous prime is 2808047951. The next prime is 2808047971. The reversal of 2808047970 is 797408082.
It is a super-2 number, since 2×28080479702 = 15770266803642241800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
2808047970 is a modest number, since divided by 47970 gives 28080 as remainder.
It is not an unprimeable number, because it can be changed into a prime (2808047971) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163242 + ... + 179621.
It is an arithmetic number, because the mean of its divisors is an integer number (93601872).
Almost surely, 22808047970 is an apocalyptic number.
2808047970 is an abundant number, since it is smaller than the sum of its proper divisors (6177731742).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2808047970 is a wasteful number, since it uses less digits than its factorization.
2808047970 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 342896 (or 342893 counting only the distinct ones).
The product of its (nonzero) digits is 225792, while the sum is 45.
The square root of 2808047970 is about 52991.0178237784. The cubic root of 2808047970 is about 1410.8088463136.
The spelling of 2808047970 in words is "two billion, eight hundred eight million, forty-seven thousand, nine hundred seventy".
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