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20301071 = 713721169
BaseRepresentation
bin100110101110…
…0010100001111
31102012101211112
41031130110033
520144113241
62003042235
7334361540
oct115342417
942171745
1020301071
111050654a
12697037b
13428a48b
1429a64c7
151bb01eb
hex135c50f

20301071 has 8 divisors (see below), whose sum is σ = 23371680. Its totient is φ = 17273088.

The previous prime is 20301059. The next prime is 20301097. The reversal of 20301071 is 17010302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20301071 - 26 = 20301007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9626 + ... + 11543.

It is an arithmetic number, because the mean of its divisors is an integer number (2921460).

Almost surely, 220301071 is an apocalyptic number.

20301071 is a deficient number, since it is larger than the sum of its proper divisors (3070609).

20301071 is a wasteful number, since it uses less digits than its factorization.

20301071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21313.

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 20301071 is about 4505.6709822179. The cubic root of 20301071 is about 272.7970377112.

Adding to 20301071 its reverse (17010302), we get a palindrome (37311373).

The spelling of 20301071 in words is "twenty million, three hundred one thousand, seventy-one".

Divisors: 1 7 137 959 21169 148183 2900153 20301071