Base | Representation |
---|---|
bin | 100110001001100… |
… | …0100100110100010 |
3 | 10022012200012012000 |
4 | 1030103010212202 |
5 | 10110144134002 |
6 | 331004144430 |
7 | 43502253453 |
oct | 11423044642 |
9 | 3265605160 |
10 | 1280068002 |
11 | 5a7624044 |
12 | 2b8838116 |
13 | 1752797b5 |
14 | c201312a |
15 | 775a461c |
hex | 4c4c49a2 |
1280068002 has 32 divisors (see below), whose sum is σ = 2846026560. Its totient is φ = 426474720.
The previous prime is 1280067931. The next prime is 1280068039. The reversal of 1280068002 is 2008600821.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131433 + ... + 140835.
It is an arithmetic number, because the mean of its divisors is an integer number (88938330).
Almost surely, 21280068002 is an apocalyptic number.
1280068002 is an abundant number, since it is smaller than the sum of its proper divisors (1565958558).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1280068002 is a wasteful number, since it uses less digits than its factorization.
1280068002 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 11935 (or 11929 counting only the distinct ones).
The product of its (nonzero) digits is 1536, while the sum is 27.
The square root of 1280068002 is about 35778.0379842160. The cubic root of 1280068002 is about 1085.7862739878.
Adding to 1280068002 its reverse (2008600821), we get a palindrome (3288668823).
The spelling of 1280068002 in words is "one billion, two hundred eighty million, sixty-eight thousand, two".
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