Base | Representation |
---|---|
bin | 1000000111110… |
… | …01011100011110 |
3 | 11202012101121012 |
4 | 10003321130132 |
5 | 114420134330 |
6 | 10432135222 |
7 | 1455046313 |
oct | 403713436 |
9 | 152171535 |
10 | 68130590 |
11 | 35504580 |
12 | 1a997512 |
13 | 11165978 |
14 | 9096d0a |
15 | 5eabc95 |
hex | 40f971e |
68130590 has 24 divisors (see below), whose sum is σ = 133953912. Its totient is φ = 24743280.
The previous prime is 68130583. The next prime is 68130593. The reversal of 68130590 is 9503186.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68130593) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86177 + ... + 86963.
It is an arithmetic number, because the mean of its divisors is an integer number (5581413).
Almost surely, 268130590 is an apocalyptic number.
68130590 is a deficient number, since it is larger than the sum of its proper divisors (65823322).
68130590 is an equidigital number, since it uses as much as digits as its factorization.
68130590 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1592 (or 805 counting only the distinct ones).
The product of its (nonzero) digits is 6480, while the sum is 32.
The square root of 68130590 is about 8254.1256350991. The cubic root of 68130590 is about 408.4266290594.
The spelling of 68130590 in words is "sixty-eight million, one hundred thirty thousand, five hundred ninety".
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