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68029 = 135233
BaseRepresentation
bin10000100110111101
310110022121
4100212331
54134104
61242541
7402223
oct204675
9113277
1068029
1147125
1233451
1324c70
141ab13
1515254
hex109bd

68029 has 4 divisors (see below), whose sum is σ = 73276. Its totient is φ = 62784.

The previous prime is 68023. The next prime is 68041. The reversal of 68029 is 92086.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 27225 = 202^2 + 165^2 .

It is a cyclic number.

It is not a de Polignac number, because 68029 - 27 = 67901 is a prime.

It is a Duffinian number.

68029 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 67994 and 68012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2604 + ... + 2629.

It is an arithmetic number, because the mean of its divisors is an integer number (18319).

268029 is an apocalyptic number.

It is an amenable number.

68029 is a deficient number, since it is larger than the sum of its proper divisors (5247).

68029 is a wasteful number, since it uses less digits than its factorization.

68029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5246.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 68029 is about 260.8236952426. The cubic root of 68029 is about 40.8223525474.

The spelling of 68029 in words is "sixty-eight thousand, twenty-nine".

Divisors: 1 13 5233 68029