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68268835292 = 22715116146839
BaseRepresentation
bin111111100101001000…
…111100000111011100
320112012202212011100012
4333211020330013130
52104303310212132
651210130022352
74634523345140
oct774510740734
9215182764305
1068268835292
1126a52a83439
12112931179b8
13658c8a8c38
143438b3b220
151b986530b2
hexfe523c1dc

68268835292 has 24 divisors (see below), whose sum is σ = 137441902080. Its totient is φ = 29064308400.

The previous prime is 68268835279. The next prime is 68268835303. The reversal of 68268835292 is 29253886286.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8069192 + ... + 8077647.

It is an arithmetic number, because the mean of its divisors is an integer number (5726745920).

Almost surely, 268268835292 is an apocalyptic number.

It is an amenable number.

68268835292 is an abundant number, since it is smaller than the sum of its proper divisors (69173066788).

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

68268835292 is a wasteful number, since it uses less digits than its factorization.

68268835292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16147001 (or 16146999 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 59.

The spelling of 68268835292 in words is "sixty-eight billion, two hundred sixty-eight million, eight hundred thirty-five thousand, two hundred ninety-two".

Divisors: 1 2 4 7 14 28 151 302 604 1057 2114 4228 16146839 32293678 64587356 113027873 226055746 452111492 2438172689 4876345378 9752690756 17067208823 34134417646 68268835292