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20444042244 = 2231703670187
BaseRepresentation
bin10011000010100011…
…110101010000000100
31221202210001221200210
4103002203311100010
5313332133322434
613220350435420
71322423330463
oct230243652004
957683057623
1020444042244
11874114658a
123b66802b70
131c0a699922
14dbd2729da
157e9c2dee9
hex4c28f5404

20444042244 has 12 divisors (see below), whose sum is σ = 47702765264. Its totient is φ = 6814680744.

The previous prime is 20444042231. The next prime is 20444042293. The reversal of 20444042244 is 44224044402.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 851835082 + ... + 851835105.

Almost surely, 220444042244 is an apocalyptic number.

It is an amenable number.

20444042244 is an abundant number, since it is smaller than the sum of its proper divisors (27258723020).

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

20444042244 is a wasteful number, since it uses less digits than its factorization.

20444042244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703670194 (or 1703670192 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 20444042244 its reverse (44224044402), we get a palindrome (64668086646).

The spelling of 20444042244 in words is "twenty billion, four hundred forty-four million, forty-two thousand, two hundred forty-four".

Divisors: 1 2 3 4 6 12 1703670187 3407340374 5111010561 6814680748 10222021122 20444042244