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20206053 = 327349919
BaseRepresentation
bin100110100010…
…1000111100101
31102000120111100
41031011013211
520133043203
62001030313
7333514530
oct115050745
942016440
1020206053
111045111a
126925399
13425615a
14297da17
151b91ea3
hex13451e5

20206053 has 24 divisors (see below), whose sum is σ = 33488000. Its totient is φ = 11500704.

The previous prime is 20206049. The next prime is 20206097. The reversal of 20206053 is 35060202.

It is not a de Polignac number, because 20206053 - 22 = 20206049 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21528 + ... + 22446.

Almost surely, 220206053 is an apocalyptic number.

It is an amenable number.

20206053 is a deficient number, since it is larger than the sum of its proper divisors (13281947).

20206053 is a wasteful number, since it uses less digits than its factorization.

20206053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20206053 is about 4495.1143478225. The cubic root of 20206053 is about 272.3707683382.

Adding to 20206053 its reverse (35060202), we get a palindrome (55266255).

The spelling of 20206053 in words is "twenty million, two hundred six thousand, fifty-three".

Divisors: 1 3 7 9 21 63 349 919 1047 2443 2757 3141 6433 7329 8271 19299 21987 57897 320731 962193 2245117 2886579 6735351 20206053