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68972841 = 327322343
BaseRepresentation
bin1000001110001…
…11000100101001
311210210011221200
410013013010221
5120124112331
610502154413
71465155000
oct407070451
9153704850
1068972841
1135a2a353
121b122a09
131139c142
149235c37
1560c65e6
hex41c7129

68972841 has 24 divisors (see below), whose sum is σ = 116188800. Its totient is φ = 39411288.

The previous prime is 68972821. The next prime is 68972857. The reversal of 68972841 is 14827986.

It is not a de Polignac number, because 68972841 - 26 = 68972777 is a prime.

It is a super-2 number, since 2×689728412 = 9514505591222562, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68972801) 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 23 ways as a sum of consecutive naturals, for example, 8085 + ... + 14258.

It is an arithmetic number, because the mean of its divisors is an integer number (4841200).

Almost surely, 268972841 is an apocalyptic number.

It is an amenable number.

68972841 is a deficient number, since it is larger than the sum of its proper divisors (47215959).

68972841 is a wasteful number, since it uses less digits than its factorization.

68972841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22370 (or 22353 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 68972841 is about 8304.9889223286. The cubic root of 68972841 is about 410.1027721743.

The spelling of 68972841 in words is "sixty-eight million, nine hundred seventy-two thousand, eight hundred forty-one".

Divisors: 1 3 7 9 21 49 63 147 343 441 1029 3087 22343 67029 156401 201087 469203 1094807 1407609 3284421 7663649 9853263 22990947 68972841