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79082081 = 137977003
BaseRepresentation
bin1001011011010…
…11001001100001
312111210210012222
410231223021201
5130221111311
611503000425
71650121001
oct455531141
9174723188
1079082081
11407045a1
1222599115
13134cb640
14a708001
156e21adb
hex4b6b261

79082081 has 8 divisors (see below), whose sum is σ = 86244480. Its totient is φ = 72073872.

The previous prime is 79082053. The next prime is 79082083. The reversal of 79082081 is 18028097.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2k-79082081 is a prime.

It is a super-2 number, since 2×790820812 = 12507951070581122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79082083) 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 7 ways as a sum of consecutive naturals, for example, 37475 + ... + 39528.

It is an arithmetic number, because the mean of its divisors is an integer number (10780560).

Almost surely, 279082081 is an apocalyptic number.

It is an amenable number.

79082081 is a deficient number, since it is larger than the sum of its proper divisors (7162399).

79082081 is a wasteful number, since it uses less digits than its factorization.

79082081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77095.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 79082081 is about 8892.8106355640. The cubic root of 79082081 is about 429.2325973718.

The spelling of 79082081 in words is "seventy-nine million, eighty-two thousand, eighty-one".

Divisors: 1 13 79 1027 77003 1001039 6083237 79082081