Base | Representation |
---|---|
bin | 1000001100100… |
… | …11011001111010 |
3 | 11210101102122111 |
4 | 10012103121322 |
5 | 120100324320 |
6 | 10453442534 |
7 | 1463314000 |
oct | 406233172 |
9 | 153342574 |
10 | 68761210 |
11 | 358a5351 |
12 | 1b04044a |
13 | 11326a0b |
14 | 91bca70 |
15 | 6083a5a |
hex | 419367a |
68761210 has 32 divisors (see below), whose sum is σ = 144345600. Its totient is φ = 23574096.
The previous prime is 68761181. The next prime is 68761241. The reversal of 68761210 is 1216786.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6594 + ... + 13453.
It is an arithmetic number, because the mean of its divisors is an integer number (4510800).
Almost surely, 268761210 is an apocalyptic number.
68761210 is an abundant number, since it is smaller than the sum of its proper divisors (75584390).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68761210 is a wasteful number, since it uses less digits than its factorization.
68761210 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20075 (or 20061 counting only the distinct ones).
The product of its (nonzero) digits is 4032, while the sum is 31.
The square root of 68761210 is about 8292.2379367695. The cubic root of 68761210 is about 409.6828997665.
Adding to 68761210 its reverse (1216786), we get a palindrome (69977996).
The spelling of 68761210 in words is "sixty-eight million, seven hundred sixty-one thousand, two hundred ten".
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