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20330223210 = 235511977841
BaseRepresentation
bin10010111011110001…
…101001011001101010
31221110211220100100000
4102323301221121222
5313114014120320
613201203123430
71316542021533
oct227361513152
957424810300
1020330223210
118692976670
123b34673576
131bbcc2819b
14dac0c568a
157dec49c90
hex4bbc6966a

20330223210 has 192 divisors, whose sum is σ = 60423801984. Its totient is φ = 4877107200.

The previous prime is 20330223209. The next prime is 20330223233. The reversal of 20330223210 is 1232203302.

It is a happy number.

20330223210 is a `hidden beast` number, since 203 + 30 + 223 + 210 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2588890 + ... + 2596730.

It is an arithmetic number, because the mean of its divisors is an integer number (314707302).

Almost surely, 220330223210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330223210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30211900992).

20330223210 is an abundant number, since it is smaller than the sum of its proper divisors (40093578774).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20330223210 is a wasteful number, since it uses less digits than its factorization.

20330223210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7971 (or 7959 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20330223210 its reverse (1232203302), we get a palindrome (21562426512).

The spelling of 20330223210 in words is "twenty billion, three hundred thirty million, two hundred twenty-three thousand, two hundred ten".