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68183196 = 2235681933
BaseRepresentation
bin1000001000001…
…10010010011100
311202022001202120
410010012102130
5114423330241
610433222540
71455355554
oct404062234
9152261676
1068183196
1135540054
121aa01a50
13111838b3
1490ac164
155ebc666
hex410649c

68183196 has 12 divisors (see below), whose sum is σ = 159094152. Its totient is φ = 22727728.

The previous prime is 68183179. The next prime is 68183197. The reversal of 68183196 is 69138186.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68183197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2840955 + ... + 2840978.

It is an arithmetic number, because the mean of its divisors is an integer number (13257846).

Almost surely, 268183196 is an apocalyptic number.

It is an amenable number.

68183196 is an abundant number, since it is smaller than the sum of its proper divisors (90910956).

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

68183196 is a wasteful number, since it uses less digits than its factorization.

68183196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681940 (or 5681938 counting only the distinct ones).

The product of its digits is 62208, while the sum is 42.

The square root of 68183196 is about 8257.3116690603. The cubic root of 68183196 is about 408.5317221542.

The spelling of 68183196 in words is "sixty-eight million, one hundred eighty-three thousand, one hundred ninety-six".

Divisors: 1 2 3 4 6 12 5681933 11363866 17045799 22727732 34091598 68183196