Base | Representation |
---|---|
bin | 100100100111110… |
… | …0001101010010001 |
3 | 10011122012212001000 |
4 | 1021033201222101 |
5 | 10004033304201 |
6 | 321533332213 |
7 | 42310454055 |
oct | 11117415221 |
9 | 3148185030 |
10 | 1228806801 |
11 | 5806a1812 |
12 | 2a3637069 |
13 | 16776c321 |
14 | b92abc65 |
15 | 72d2ad86 |
hex | 493e1a91 |
1228806801 has 32 divisors (see below), whose sum is σ = 1932422400. Its totient is φ = 769063680.
The previous prime is 1228806797. The next prime is 1228806823. The reversal of 1228806801 is 1086088221.
It is not a de Polignac number, because 1228806801 - 22 = 1228806797 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1228806851) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190060 + ... + 196418.
It is an arithmetic number, because the mean of its divisors is an integer number (60388200).
Almost surely, 21228806801 is an apocalyptic number.
It is an amenable number.
1228806801 is a deficient number, since it is larger than the sum of its proper divisors (703615599).
1228806801 is a wasteful number, since it uses less digits than its factorization.
1228806801 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6806 (or 6800 counting only the distinct ones).
The product of its (nonzero) digits is 12288, while the sum is 36.
The square root of 1228806801 is about 35054.3406869962. The cubic root of 1228806801 is about 1071.0946961753.
The spelling of 1228806801 in words is "one billion, two hundred twenty-eight million, eight hundred six thousand, eight hundred one".
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