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20304300412 = 22113712471929
BaseRepresentation
bin10010111010001110…
…110000100101111100
31221102001010022221101
4102322032300211330
5313040400103122
613154435342444
71316105464054
oct227216604574
957361108841
1020304300412
11867a280470
123b27a51a24
131bb774cc56
14da8898564
157dc829027
hex4ba3b097c

20304300412 has 24 divisors (see below), whose sum is σ = 39810400560. Its totient is φ = 8979788160.

The previous prime is 20304300389. The next prime is 20304300413. The reversal of 20304300412 is 21400340302.

It is a self number, because there is not a number n which added to its sum of digits gives 20304300412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20304300413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6234337 + ... + 6237592.

It is an arithmetic number, because the mean of its divisors is an integer number (1658766690).

Almost surely, 220304300412 is an apocalyptic number.

20304300412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20304300412 is a deficient number, since it is larger than the sum of its proper divisors (19506100148).

20304300412 is a wasteful number, since it uses less digits than its factorization.

20304300412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12471981 (or 12471979 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20304300412 its reverse (21400340302), we get a palindrome (41704640714).

The spelling of 20304300412 in words is "twenty billion, three hundred four million, three hundred thousand, four hundred twelve".

Divisors: 1 2 4 11 22 37 44 74 148 407 814 1628 12471929 24943858 49887716 137191219 274382438 461461373 548764876 922922746 1845845492 5076075103 10152150206 20304300412