Base | Representation |
---|---|
bin | 111111101100101101… |
… | …101001001000111000 |
3 | 20112112121221120210012 |
4 | 333230231221020320 |
5 | 2110033322204100 |
6 | 51230505241052 |
7 | 4640625351455 |
oct | 775455511070 |
9 | 215477846705 |
10 | 68395897400 |
11 | 27008779046 |
12 | 11309793188 |
13 | 65b000640c |
14 | 344b97482c |
15 | 1ba48a1135 |
hex | fecb69238 |
68395897400 has 48 divisors (see below), whose sum is σ = 159089025240. Its totient is φ = 27346563200.
The previous prime is 68395897393. The next prime is 68395897459. The reversal of 68395897400 is 479859386.
It is a self number, because there is not a number n which added to its sum of digits gives 68395897400.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398855 + ... + 543945.
Almost surely, 268395897400 is an apocalyptic number.
It is an amenable number.
68395897400 is an abundant number, since it is smaller than the sum of its proper divisors (90693127840).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68395897400 is a wasteful number, since it uses less digits than its factorization.
68395897400 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 147464 (or 147455 counting only the distinct ones).
The product of its (nonzero) digits is 13063680, while the sum is 59.
The spelling of 68395897400 in words is "sixty-eight billion, three hundred ninety-five million, eight hundred ninety-seven thousand, four hundred".
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