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68800012 = 2217200003
BaseRepresentation
bin1000001100111…
…00111000001100
311210110101212121
410012130320030
5120103100022
610454342324
71463535061
oct406347014
9153411777
1068800012
1135921516
121b05a9a4
131133b588
1491ccc68
1560902c7
hex419ce0c

68800012 has 6 divisors (see below), whose sum is σ = 120400028. Its totient is φ = 34400004.

The previous prime is 68799967. The next prime is 68800013. The reversal of 68800012 is 21000886.

It is a self number, because there is not a number n which added to its sum of digits gives 68800012.

It is not an unprimeable number, because it can be changed into a prime (68800013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8599998 + ... + 8600005.

Almost surely, 268800012 is an apocalyptic number.

It is an amenable number.

68800012 is a deficient number, since it is larger than the sum of its proper divisors (51600016).

68800012 is a wasteful number, since it uses less digits than its factorization.

68800012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17200007 (or 17200005 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 68800012 is about 8294.5772646953. The cubic root of 68800012 is about 409.7599467269.

Adding to 68800012 its reverse (21000886), we get a palindrome (89800898).

The spelling of 68800012 in words is "sixty-eight million, eight hundred thousand, twelve".

Divisors: 1 2 4 17200003 34400006 68800012