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80973065 = 5131181683
BaseRepresentation
bin1001101001110…
…00110100001001
312122100212011102
410310320310021
5131212114230
612011311145
72002155035
oct464706411
9178325142
1080973065
1141786298
122314b4b5
1313a11274
14aa7b1c5
157197045
hex4d38d09

80973065 has 16 divisors (see below), whose sum is σ = 98594496. Its totient is φ = 63835200.

The previous prime is 80973049. The next prime is 80973071. The reversal of 80973065 is 56037908.

It is not a de Polignac number, because 80973065 - 24 = 80973049 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118214 + ... + 118896.

It is an arithmetic number, because the mean of its divisors is an integer number (6162156).

Almost surely, 280973065 is an apocalyptic number.

It is an amenable number.

80973065 is a deficient number, since it is larger than the sum of its proper divisors (17621431).

80973065 is a wasteful number, since it uses less digits than its factorization.

80973065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 80973065 is about 8998.5034866916. The cubic root of 80973065 is about 432.6269065257.

The spelling of 80973065 in words is "eighty million, nine hundred seventy-three thousand, sixty-five".

Divisors: 1 5 131 181 655 683 905 3415 23711 89473 118555 123623 447365 618115 16194613 80973065