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20073270784 = 297193137257
BaseRepresentation
bin10010101100011101…
…011100111000000000
31220210221101210212111
4102230131130320000
5312102224131114
613115503505104
71310301662230
oct225435347000
956727353774
1020073270784
118570924496
123a825b8194
131b7b920128
14d85d19cc0
157c73e0bc4
hex4ac75ce00

20073270784 has 320 divisors, whose sum is σ = 51350999040. Its totient is φ = 7644119040.

The previous prime is 20073270757. The next prime is 20073270787. The reversal of 20073270784 is 48707237002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20073270787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78105984 + ... + 78106240.

It is an arithmetic number, because the mean of its divisors is an integer number (160471872).

Almost surely, 220073270784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20073270784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25675499520).

20073270784 is an abundant number, since it is smaller than the sum of its proper divisors (31277728256).

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

20073270784 is a wasteful number, since it uses less digits than its factorization.

20073270784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369 (or 353 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The spelling of 20073270784 in words is "twenty billion, seventy-three million, two hundred seventy thousand, seven hundred eighty-four".