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80981282 = 2294761487
BaseRepresentation
bin1001101001110…
…10110100100010
312122101021102202
410310322310202
5131212400112
612011413202
72002221014
oct464726442
9178337382
1080981282
1141791488
1223154202
1313a14c25
14aa801b4
1571996c2
hex4d3ad22

80981282 has 32 divisors (see below), whose sum is σ = 130705920. Its totient is φ = 37558080.

The previous prime is 80981281. The next prime is 80981291. The reversal of 80981282 is 28218908.

It is a super-3 number, since 3×809812823 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (80981281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166043 + ... + 166529.

It is an arithmetic number, because the mean of its divisors is an integer number (4084560).

Almost surely, 280981282 is an apocalyptic number.

80981282 is a deficient number, since it is larger than the sum of its proper divisors (49724638).

80981282 is a wasteful number, since it uses less digits than its factorization.

80981282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 80981282 is about 8998.9600510281. The cubic root of 80981282 is about 432.6415400957.

The spelling of 80981282 in words is "eighty million, nine hundred eighty-one thousand, two hundred eighty-two".

Divisors: 1 2 29 47 58 61 94 122 487 974 1363 1769 2726 2867 3538 5734 14123 22889 28246 29707 45778 59414 83143 166286 663781 861503 1327562 1396229 1723006 2792458 40490641 80981282