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68106429 = 3214275303
BaseRepresentation
bin1000000111100…
…11100010111101
311202011011110100
410003303202331
5114413401204
610431431313
71454616006
oct403634275
9152134410
1068106429
1135498406
121a985539
1311157981
14908c1ad
155ea4a39
hex40f38bd

68106429 has 12 divisors (see below), whose sum is σ = 98463456. Its totient is φ = 45363912.

The previous prime is 68106383. The next prime is 68106461. The reversal of 68106429 is 92460186.

68106429 is a `hidden beast` number, since 6 + 8 + 1 + 0 + 642 + 9 = 666.

It is not a de Polignac number, because 68106429 - 28 = 68106173 is a prime.

It is a super-2 number, since 2×681064292 = 9276971342264082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68106393 and 68106402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68106329) 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, 10192 + ... + 15494.

It is an arithmetic number, because the mean of its divisors is an integer number (8205288).

Almost surely, 268106429 is an apocalyptic number.

It is an amenable number.

68106429 is a deficient number, since it is larger than the sum of its proper divisors (30357027).

68106429 is a wasteful number, since it uses less digits than its factorization.

68106429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6733 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 68106429 is about 8252.6619341883. The cubic root of 68106429 is about 408.3783435413.

The spelling of 68106429 in words is "sixty-eight million, one hundred six thousand, four hundred twenty-nine".

Divisors: 1 3 9 1427 4281 5303 12843 15909 47727 7567381 22702143 68106429