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8205830143 = 7191014211451
BaseRepresentation
bin1111010010001101…
…10000011111111111
3210011212201100202221
413221012300133333
5113301143031033
63434131230211
7410230256020
oct75106603777
923155640687
108205830143
113530a82705
121710148367
13a0a08bcc4
1457bb66c47
1533060712d
hex1e91b07ff

8205830143 has 32 divisors (see below), whose sum is σ = 9999982080. Its totient is φ = 6577200000.

The previous prime is 8205830089. The next prime is 8205830161. The reversal of 8205830143 is 3410385028.

It is a happy number.

It is not a de Polignac number, because 8205830143 - 29 = 8205829631 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8205830099 and 8205830108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8205830173) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5654568 + ... + 5656018.

It is an arithmetic number, because the mean of its divisors is an integer number (312499440).

Almost surely, 28205830143 is an apocalyptic number.

8205830143 is a deficient number, since it is larger than the sum of its proper divisors (1794151937).

8205830143 is a wasteful number, since it uses less digits than its factorization.

8205830143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1999.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 8205830143 is about 90586.0372408463. The cubic root of 8205830143 is about 2017.0074748592.

The spelling of 8205830143 in words is "eight billion, two hundred five million, eight hundred thirty thousand, one hundred forty-three".

Divisors: 1 7 19 101 133 421 707 1451 1919 2947 7999 10157 13433 27569 42521 55993 146551 192983 297647 610871 807899 1025857 2784469 4276097 5655293 11606549 19491283 61697971 81245843 431885797 1172261449 8205830143