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68165084 = 22131968993
BaseRepresentation
bin1000001000000…
…01110111011100
311202021010220202
410010001313130
5114422240314
610433003032
71455252011
oct404016734
9152233822
1068165084
1135528489
121a9b3478
1311178590
1490a5708
155eb70de
hex4101ddc

68165084 has 24 divisors (see below), whose sum is σ = 135228240. Its totient is φ = 29804544.

The previous prime is 68165059. The next prime is 68165089. The reversal of 68165084 is 48056186.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68165089) 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 7 ways as a sum of consecutive naturals, for example, 33509 + ... + 35484.

It is an arithmetic number, because the mean of its divisors is an integer number (5634510).

Almost surely, 268165084 is an apocalyptic number.

It is an amenable number.

68165084 is a deficient number, since it is larger than the sum of its proper divisors (67063156).

68165084 is a wasteful number, since it uses less digits than its factorization.

68165084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69029 (or 69027 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 68165084 is about 8256.2148712349. The cubic root of 68165084 is about 408.4955451964.

The spelling of 68165084 in words is "sixty-eight million, one hundred sixty-five thousand, eighty-four".

Divisors: 1 2 4 13 19 26 38 52 76 247 494 988 68993 137986 275972 896909 1310867 1793818 2621734 3587636 5243468 17041271 34082542 68165084