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20302100230 = 2517235192353
BaseRepresentation
bin10010111010000110…
…010111011100000110
31221101212222112212011
4102322012113130012
5313034314201410
613154320244434
71316051001406
oct227206273406
957355875764
1020302100230
118679008435
123b2717071a
131bb715c679
14da8484806
157dc54218a
hex4ba197706

20302100230 has 32 divisors (see below), whose sum is σ = 40375744704. Its totient is φ = 7310831616.

The previous prime is 20302100173. The next prime is 20302100233. The reversal of 20302100230 is 3200120302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20302100230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302100233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2592267 + ... + 2600086.

It is an arithmetic number, because the mean of its divisors is an integer number (1261742022).

Almost surely, 220302100230 is an apocalyptic number.

20302100230 is a deficient number, since it is larger than the sum of its proper divisors (20073644474).

20302100230 is a wasteful number, since it uses less digits than its factorization.

20302100230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5192400.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20302100230 its reverse (3200120302), we get a palindrome (23502220532).

The spelling of 20302100230 in words is "twenty billion, three hundred two million, one hundred thousand, two hundred thirty".

Divisors: 1 2 5 10 17 23 34 46 85 115 170 230 391 782 1955 3910 5192353 10384706 25961765 51923530 88270001 119424119 176540002 238848238 441350005 597120595 882700010 1194241190 2030210023 4060420046 10151050115 20302100230