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68500012 = 2274159669
BaseRepresentation
bin1000001010100…
…11101000101100
311202220011100111
410011103220230
5120014000022
610444105404
71461145330
oct405235054
9152804314
1068500012
1135737089
121ab35264
1311264b69
1491517c0
156031477
hex4153a2c

68500012 has 24 divisors (see below), whose sum is σ = 140343840. Its totient is φ = 28640640.

The previous prime is 68499973. The next prime is 68500037. The reversal of 68500012 is 21000586.

It is a happy number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 28687 + ... + 30982.

It is an arithmetic number, because the mean of its divisors is an integer number (5847660).

Almost surely, 268500012 is an apocalyptic number.

It is an amenable number.

68500012 is an abundant number, since it is smaller than the sum of its proper divisors (71843828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68500012 is a wasteful number, since it uses less digits than its factorization.

68500012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59721 (or 59719 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 68500012 is about 8276.4734035699. The cubic root of 68500012 is about 409.1634977395.

Adding to 68500012 its reverse (21000586), we get a palindrome (89500598).

The spelling of 68500012 in words is "sixty-eight million, five hundred thousand, twelve".

Divisors: 1 2 4 7 14 28 41 82 164 287 574 1148 59669 119338 238676 417683 835366 1670732 2446429 4892858 9785716 17125003 34250006 68500012