Base | Representation |
---|---|
bin | 1010011101011111… |
… | …1110011111001011 |
3 | 21020200220021001020 |
4 | 2213113332133023 |
5 | 21222332032311 |
6 | 1142350523523 |
7 | 126405201060 |
oct | 24727763713 |
9 | 7220807036 |
10 | 2808080331 |
11 | 12110a7351 |
12 | 6645065a3 |
13 | 3599c90c4 |
14 | 1c8d28c67 |
15 | 1167d3c06 |
hex | a75fe7cb |
2808080331 has 16 divisors (see below), whose sum is σ = 4394628864. Its totient is φ = 1561248864.
The previous prime is 2808080311. The next prime is 2808080339. The reversal of 2808080331 is 1330808082.
It is not a de Polignac number, because 2808080331 - 211 = 2808078283 is a prime.
It is a super-2 number, since 2×28080803312 = 15770630290698139122, which contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 2808080292 and 2808080301.
It is not an unprimeable number, because it can be changed into a prime (2808080339) 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, 1806225 + ... + 1807778.
It is an arithmetic number, because the mean of its divisors is an integer number (274664304).
Almost surely, 22808080331 is an apocalyptic number.
2808080331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.
2808080331 is a deficient number, since it is larger than the sum of its proper divisors (1586548533).
2808080331 is a wasteful number, since it uses less digits than its factorization.
2808080331 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3614050.
The product of its (nonzero) digits is 9216, while the sum is 33.
The square root of 2808080331 is about 52991.3231670997. The cubic root of 2808080331 is about 1410.8142658565.
The spelling of 2808080331 in words is "two billion, eight hundred eight million, eighty thousand, three hundred thirty-one".
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