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68026131 = 3219339163
BaseRepresentation
bin1000000110111…
…11111100010011
311202000002022100
410003133330103
5114403314011
610430011443
71454132625
oct403377423
9152002270
1068026131
1135443048
121a946b83
131112a264
14906ac15
155e8ad56
hex40dff13

68026131 has 12 divisors (see below), whose sum is σ = 98771608. Its totient is φ = 45114624.

The previous prime is 68026109. The next prime is 68026139. The reversal of 68026131 is 13162086.

It is not a de Polignac number, because 68026131 - 222 = 63831827 is a prime.

It is a super-2 number, since 2×680261312 = 9255108997658322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68026095 and 68026104.

It is not an unprimeable number, because it can be changed into a prime (68026139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17845 + ... + 21318.

Almost surely, 268026131 is an apocalyptic number.

68026131 is a deficient number, since it is larger than the sum of its proper divisors (30745477).

68026131 is a wasteful number, since it uses less digits than its factorization.

68026131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39362 (or 39359 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 68026131 is about 8247.7955236536. The cubic root of 68026131 is about 408.2177866968.

The spelling of 68026131 in words is "sixty-eight million, twenty-six thousand, one hundred thirty-one".

Divisors: 1 3 9 193 579 1737 39163 117489 352467 7558459 22675377 68026131