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68238676 = 22112140989
BaseRepresentation
bin1000001000100…
…11110101010100
311202101212212101
410010103311110
5114432114201
610434331444
71456006402
oct404236524
9152355771
1068238676
1135578800
121aa29b84
13111a2c1c
1490c4472
155ecdd01
hex4113d54

68238676 has 18 divisors (see below), whose sum is σ = 131261690. Its totient is φ = 31017360.

The previous prime is 68238649. The next prime is 68238691. The reversal of 68238676 is 67683286.

It can be written as a sum of positive squares in only one way, i.e., 56610576 + 11628100 = 7524^2 + 3410^2 .

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 70011 + ... + 70978.

Almost surely, 268238676 is an apocalyptic number.

It is an amenable number.

68238676 is a deficient number, since it is larger than the sum of its proper divisors (63023014).

68238676 is a wasteful number, since it uses less digits than its factorization.

68238676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141015 (or 141002 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 68238676 is about 8260.6704328402. The cubic root of 68238676 is about 408.6424982033.

The spelling of 68238676 in words is "sixty-eight million, two hundred thirty-eight thousand, six hundred seventy-six".

Divisors: 1 2 4 11 22 44 121 242 484 140989 281978 563956 1550879 3101758 6203516 17059669 34119338 68238676