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68130586 = 2103330731
BaseRepresentation
bin1000000111110…
…01011100011010
311202012101121001
410003321130122
5114420134321
610432135214
71455046306
oct403713432
9152171531
1068130586
1135504577
121a99750a
1311165974
149096d06
155eabc91
hex40f971a

68130586 has 8 divisors (see below), whose sum is σ = 103188384. Its totient is φ = 33734460.

The previous prime is 68130583. The next prime is 68130593. The reversal of 68130586 is 68503186.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (68130581) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 165160 + ... + 165571.

It is an arithmetic number, because the mean of its divisors is an integer number (12898548).

Almost surely, 268130586 is an apocalyptic number.

68130586 is a deficient number, since it is larger than the sum of its proper divisors (35057798).

68130586 is a wasteful number, since it uses less digits than its factorization.

68130586 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330836.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 68130586 is about 8254.1253927960. The cubic root of 68130586 is about 408.4266210664.

The spelling of 68130586 in words is "sixty-eight million, one hundred thirty thousand, five hundred eighty-six".

Divisors: 1 2 103 206 330731 661462 34065293 68130586