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20353088768 = 28227577607
BaseRepresentation
bin10010111101001000…
…110111110100000000
31221112102221000222112
4102331020313310000
5313140342320033
613203341154452
71320240254135
oct227510676400
957472830875
1020353088768
1186a4873921
123b4025ba28
131bc48a29bc
14db115858c
157e1c64c48
hex4bd237d00

20353088768 has 72 divisors (see below), whose sum is σ = 40943707392. Its totient is φ = 10097491968.

The previous prime is 20353088741. The next prime is 20353088803. The reversal of 20353088768 is 86788035302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33530321 + ... + 33530927.

Almost surely, 220353088768 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 20353088768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20471853696).

20353088768 is an abundant number, since it is smaller than the sum of its proper divisors (20590618624).

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

20353088768 is an equidigital number, since it uses as much as digits as its factorization.

20353088768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 50.

The spelling of 20353088768 in words is "twenty billion, three hundred fifty-three million, eighty-eight thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 16 32 64 128 227 256 454 577 607 908 1154 1214 1816 2308 2428 3632 4616 4856 7264 9232 9712 14528 18464 19424 29056 36928 38848 58112 73856 77696 130979 137789 147712 155392 261958 275578 350239 523916 551156 700478 1047832 1102312 1400956 2095664 2204624 2801912 4191328 4409248 5603824 8382656 8818496 11207648 16765312 17636992 22415296 33530624 35273984 44830592 79504253 89661184 159008506 318017012 636034024 1272068048 2544136096 5088272192 10176544384 20353088768