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2030205105 = 32545115669
BaseRepresentation
bin111100100000010…
…0111100010110001
312020111012002211200
41321000213202301
513124213030410
6533242201413
7101211313215
oct17100474261
95214162750
102030205105
11951aa8165
12487ab3269
132647c17c6
141538bc945
15bd37c3c0
hex790278b1

2030205105 has 12 divisors (see below), whose sum is σ = 3519022260. Its totient is φ = 1082776032.

The previous prime is 2030205103. The next prime is 2030205173. The reversal of 2030205105 is 5015020302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 819791424 + 1210413681 = 28632^2 + 34791^2 .

It is not a de Polignac number, because 2030205105 - 21 = 2030205103 is a prime.

It is a super-2 number, since 2×20302051052 = 8243465536736122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2030205103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22557790 + ... + 22557879.

It is an arithmetic number, because the mean of its divisors is an integer number (293251855).

Almost surely, 22030205105 is an apocalyptic number.

It is an amenable number.

2030205105 is a deficient number, since it is larger than the sum of its proper divisors (1488817155).

2030205105 is a wasteful number, since it uses less digits than its factorization.

2030205105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45115680 (or 45115677 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 2030205105 is about 45057.7973829170. The cubic root of 2030205105 is about 1266.2320595397.

Adding to 2030205105 its reverse (5015020302), we get a palindrome (7045225407).

The spelling of 2030205105 in words is "two billion, thirty million, two hundred five thousand, one hundred five".

Divisors: 1 3 5 9 15 45 45115669 135347007 225578345 406041021 676735035 2030205105