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68243052 = 2235686921
BaseRepresentation
bin1000001000101…
…00111001101100
311202102002212110
410010110321230
5114432234202
610434404020
71456025223
oct404247154
9152362773
1068243052
1135581019
121aa30610
13111a4c07
1490c5cba
155ed026c
hex4114e6c

68243052 has 12 divisors (see below), whose sum is σ = 159233816. Its totient is φ = 22747680.

The previous prime is 68243027. The next prime is 68243053. The reversal of 68243052 is 25034286.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×682430522 = 9314228292549408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68243053) 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 in 3 ways as a sum of consecutive naturals, for example, 2843449 + ... + 2843472.

Almost surely, 268243052 is an apocalyptic number.

It is an amenable number.

68243052 is an abundant number, since it is smaller than the sum of its proper divisors (90990764).

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

68243052 is a wasteful number, since it uses less digits than its factorization.

68243052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5686928 (or 5686926 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 68243052 is about 8260.9352981366. The cubic root of 68243052 is about 408.6512331391.

It can be divided in two parts, 682 and 43052, that added together give a palindrome (43734).

The spelling of 68243052 in words is "sixty-eight million, two hundred forty-three thousand, fifty-two".

Divisors: 1 2 3 4 6 12 5686921 11373842 17060763 22747684 34121526 68243052