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20330220000 = 25354595743
BaseRepresentation
bin10010111011110001…
…101000100111100000
31221110211220011221010
4102323301220213200
5313114014020000
613201203100520
71316542006266
oct227361504740
957424804833
1020330220000
118692974212
123b34671740
131bbcc2689c
14dac0c4436
157dec48d50
hex4bbc689e0

20330220000 has 240 divisors, whose sum is σ = 67829287680. Its totient is φ = 5328576000.

The previous prime is 20330219999. The next prime is 20330220011. The reversal of 20330220000 is 2203302.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 3537129 + ... + 3542871.

It is an arithmetic number, because the mean of its divisors is an integer number (282622032).

Almost surely, 220330220000 is an apocalyptic number.

20330220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20330220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33914643840).

20330220000 is an abundant number, since it is smaller than the sum of its proper divisors (47499067680).

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

20330220000 is an equidigital number, since it uses as much as digits as its factorization.

20330220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835 (or 5812 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

Adding to 20330220000 its reverse (2203302), we get a palindrome (20332423302).

The spelling of 20330220000 in words is "twenty billion, three hundred thirty million, two hundred twenty thousand".