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9806443081 = 17233932329
BaseRepresentation
bin10010010001000001…
…00111001001001001
3221022102112220221121
421020200213021021
5130040422134311
64301030035241
7465004251031
oct111040471111
927272486847
109806443081
114182532916
121a981a8b21
13c0387aa56
1469057a8c1
153c5dc7b71
hex248827249

9806443081 has 6 divisors (see below), whose sum is σ = 10417225310. Its totient is φ = 9229593216.

The previous prime is 9806443069. The next prime is 9806443091. The reversal of 9806443081 is 1803446089.

It can be written as a sum of positive squares in 3 ways, for example, as 1031437456 + 8775005625 = 32116^2 + 93675^2 .

It is not a de Polignac number, because 9806443081 - 211 = 9806441033 is a prime.

It is a super-2 number, since 2×98064430812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9806443091) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16965876 + ... + 16966453.

Almost surely, 29806443081 is an apocalyptic number.

It is an amenable number.

9806443081 is a deficient number, since it is larger than the sum of its proper divisors (610782229).

9806443081 is a wasteful number, since it uses less digits than its factorization.

9806443081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33932363 (or 33932346 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 9806443081 is about 99027.4864923876. The cubic root of 9806443081 is about 2140.4438390701.

The spelling of 9806443081 in words is "nine billion, eight hundred six million, four hundred forty-three thousand, eighty-one".

Divisors: 1 17 289 33932329 576849593 9806443081