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20303487841 = 7134712737379
BaseRepresentation
bin10010111010001011…
…101010001101100001
31221101222121001022011
4102322023222031201
5313040143102331
613154410112521
71316065541050
oct227213521541
957358531264
1020303487841
118679875a1a
123b2771b741
131bb7527140
14da8726397
157dc7183b1
hex4ba2ea361

20303487841 has 32 divisors (see below), whose sum is σ = 25722224640. Its totient is φ = 15598287936.

The previous prime is 20303487839. The next prime is 20303487847. The reversal of 20303487841 is 14878430302.

It is not a de Polignac number, because 20303487841 - 21 = 20303487839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20303487794 and 20303487803.

It is not an unprimeable number, because it can be changed into a prime (20303487847) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 524490 + ... + 561868.

It is an arithmetic number, because the mean of its divisors is an integer number (803819520).

Almost surely, 220303487841 is an apocalyptic number.

It is an amenable number.

20303487841 is a deficient number, since it is larger than the sum of its proper divisors (5418736799).

20303487841 is a wasteful number, since it uses less digits than its factorization.

20303487841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37573.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 20303487841 in words is "twenty billion, three hundred three million, four hundred eighty-seven thousand, eight hundred forty-one".

Divisors: 1 7 13 47 91 127 329 611 889 1651 4277 5969 11557 37379 41783 77597 261653 485927 543179 1756813 3401489 4747133 12297691 22838569 33229931 61712729 159869983 223115251 431989103 1561806757 2900498263 20303487841