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68219116 = 22715431579
BaseRepresentation
bin1000001000011…
…11000011101100
311202100220000221
410010033003230
5114431002431
610434101124
71455565360
oct404170354
9152326027
1068219116
1135565039
121aa1a7a4
1311197054
1490bb2a0
155ec8111
hex410f0ec

68219116 has 24 divisors (see below), whose sum is σ = 136613120. Its totient is φ = 29199312.

The previous prime is 68219087. The next prime is 68219119. The reversal of 68219116 is 61191286.

It is not an unprimeable number, because it can be changed into a prime (68219119) 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, 42415 + ... + 43993.

Almost surely, 268219116 is an apocalyptic number.

It is an amenable number.

68219116 is an abundant number, since it is smaller than the sum of its proper divisors (68394004).

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

68219116 is a wasteful number, since it uses less digits than its factorization.

68219116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3133 (or 3131 counting only the distinct ones).

The product of its digits is 5184, while the sum is 34.

The square root of 68219116 is about 8259.4864247119. The cubic root of 68219116 is about 408.6034499120.

The spelling of 68219116 in words is "sixty-eight million, two hundred nineteen thousand, one hundred sixteen".

Divisors: 1 2 4 7 14 28 1543 1579 3086 3158 6172 6316 10801 11053 21602 22106 43204 44212 2436397 4872794 9745588 17054779 34109558 68219116