Base | Representation |
---|---|
bin | 11000101010001111… |
… | …01000100101000010 |
3 | 1021011122221021222102 |
4 | 30111013220211002 |
5 | 204103220142032 |
6 | 10025414310402 |
7 | 646036360400 |
oct | 142507504502 |
9 | 37148837872 |
10 | 13239224642 |
11 | 5684219476 |
12 | 2695958402 |
13 | 132cb10947 |
14 | 8d843c470 |
15 | 527458362 |
hex | 3151e8942 |
13239224642 has 54 divisors (see below), whose sum is σ = 23619167577. Its totient is φ = 5549471088.
The previous prime is 13239224639. The next prime is 13239224659. The reversal of 13239224642 is 24642293231.
It can be written as a sum of positive squares in 2 ways, for example, as 8482225801 + 4756998841 = 92099^2 + 68971^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=81361.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 13239224596 and 13239224605.
It is an unprimeable number.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 67204088 + ... + 67204284.
Almost surely, 213239224642 is an apocalyptic number.
13239224642 is a deficient number, since it is larger than the sum of its proper divisors (10379942935).
13239224642 is an frugal number, since it uses more digits than its factorization.
13239224642 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 528 (or 265 counting only the distinct ones).
The product of its digits is 124416, while the sum is 38.
The spelling of 13239224642 in words is "thirteen billion, two hundred thirty-nine million, two hundred twenty-four thousand, six hundred forty-two".
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