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20330141 = 133161827
BaseRepresentation
bin100110110001…
…1011010011101
31102020212201012
41031203122131
520201031031
62003425005
7334542356
oct115433235
942225635
1020330141
1110526377
126985165
13429a790
1429b2d2d
151bb8b2b
hex136369d

20330141 has 16 divisors (see below), whose sum is σ = 22998528. Its totient is φ = 17841600.

The previous prime is 20330129. The next prime is 20330143. The reversal of 20330141 is 14103302.

It is a cyclic number.

It is not a de Polignac number, because 20330141 - 210 = 20329117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24170 + ... + 24996.

It is an arithmetic number, because the mean of its divisors is an integer number (1437408).

Almost surely, 220330141 is an apocalyptic number.

It is an amenable number.

20330141 is a deficient number, since it is larger than the sum of its proper divisors (2668387).

20330141 is a wasteful number, since it uses less digits than its factorization.

20330141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 932.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 20330141 is about 4508.8957628226. The cubic root of 20330141 is about 272.9271856508.

Adding to 20330141 its reverse (14103302), we get a palindrome (34433443).

The spelling of 20330141 in words is "twenty million, three hundred thirty thousand, one hundred forty-one".

Divisors: 1 13 31 61 403 793 827 1891 10751 24583 25637 50447 333281 655811 1563857 20330141