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8281081 = 23372263
BaseRepresentation
bin11111100101101111111001
3120120201111201
4133211233321
54104443311
6453254201
7130250044
oct37455771
916521451
108281081
114746776
122934361
13193c363
141157c5b
15ad89c1
hex7e5bf9

8281081 has 12 divisors (see below), whose sum is σ = 8914752. Its totient is φ = 7677648.

The previous prime is 8281073. The next prime is 8281099. The reversal of 8281081 is 1801828.

It is not a de Polignac number, because 8281081 - 23 = 8281073 is a prime.

It is a super-2 number, since 2×82810812 = 137152605057122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8281381) 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 11 ways as a sum of consecutive naturals, for example, 31356 + ... + 31618.

It is an arithmetic number, because the mean of its divisors is an integer number (742896).

Almost surely, 28281081 is an apocalyptic number.

It is an amenable number.

8281081 is a deficient number, since it is larger than the sum of its proper divisors (633671).

8281081 is a wasteful number, since it uses less digits than its factorization.

8281081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 28.

The square root of 8281081 is about 2877.6867445919. The cubic root of 8281081 is about 202.3154320915.

The spelling of 8281081 in words is "eight million, two hundred eighty-one thousand, eighty-one".

Divisors: 1 23 37 263 851 1369 6049 9731 31487 223813 360047 8281081