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2020205 = 511231597
BaseRepresentation
bin111101101001101101101
310210122012102
413231031231
51004121310
6111144445
723112545
oct7551555
93718172
102020205
11115a8a0
12815125
135596b5
143a8325
1529d8a5
hex1ed36d

2020205 has 16 divisors (see below), whose sum is σ = 2761344. Its totient is φ = 1404480.

The previous prime is 2020181. The next prime is 2020223. The reversal of 2020205 is 5020202.

It is not a de Polignac number, because 2020205 - 210 = 2019181 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (172584).

22020205 is an apocalyptic number.

It is an amenable number.

2020205 is a deficient number, since it is larger than the sum of its proper divisors (741139).

2020205 is a wasteful number, since it uses less digits than its factorization.

2020205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636.

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 2020205 is about 1421.3391572739. The cubic root of 2020205 is about 126.4149626108.

Adding to 2020205 its reverse (5020202), we get a palindrome (7040407).

The spelling of 2020205 in words is "two million, twenty thousand, two hundred five".

Divisors: 1 5 11 23 55 115 253 1265 1597 7985 17567 36731 87835 183655 404041 2020205