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8026318081 = 29276769589
BaseRepresentation
bin1110111100110011…
…11110010100000001
3202201100221012112001
413132121332110001
5112414214134311
63404235504001
7402620402155
oct73631762401
922640835461
108026318081
113449713631
12167bbb8001
139abb29252
14561d99065
1531e9984c1
hex1de67e501

8026318081 has 4 divisors (see below), whose sum is σ = 8303087700. Its totient is φ = 7749548464.

The previous prime is 8026318057. The next prime is 8026318093. The reversal of 8026318081 is 1808136208.

8026318081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3746541681 + 4279776400 = 61209^2 + 65420^2 .

It is a cyclic number.

It is not a de Polignac number, because 8026318081 - 215 = 8026285313 is a prime.

It is a super-2 number, since 2×80263180812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8026318081.

It is not an unprimeable number, because it can be changed into a prime (8026348081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138384766 + ... + 138384823.

It is an arithmetic number, because the mean of its divisors is an integer number (2075771925).

Almost surely, 28026318081 is an apocalyptic number.

It is an amenable number.

8026318081 is a deficient number, since it is larger than the sum of its proper divisors (276769619).

8026318081 is a wasteful number, since it uses less digits than its factorization.

8026318081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276769618.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 8026318081 is about 89589.7208445255. The cubic root of 8026318081 is about 2002.1907727977.

The spelling of 8026318081 in words is "eight billion, twenty-six million, three hundred eighteen thousand, eighty-one".

Divisors: 1 29 276769589 8026318081