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80818093 = 417127763
BaseRepresentation
bin1001101000100…
…10111110101101
312122001222120201
410310102332231
5131142134333
612004113501
72000641156
oct464227655
9178058521
1080818093
114168a914
1223095891
1313988875
14aa3a92d
15716617d
hex4d12fad

80818093 has 8 divisors (see below), whose sum is σ = 83958336. Its totient is φ = 77733600.

The previous prime is 80818061. The next prime is 80818097. The reversal of 80818093 is 39081808.

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

It is a cyclic number.

It is not a de Polignac number, because 80818093 - 25 = 80818061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80818097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10971 + ... + 16792.

It is an arithmetic number, because the mean of its divisors is an integer number (10494792).

Almost surely, 280818093 is an apocalyptic number.

It is an amenable number.

80818093 is a deficient number, since it is larger than the sum of its proper divisors (3140243).

80818093 is a wasteful number, since it uses less digits than its factorization.

80818093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27875.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 80818093 is about 8989.8883752803. Note that the first 3 decimals coincide. The cubic root of 80818093 is about 432.3507329019.

The spelling of 80818093 in words is "eighty million, eight hundred eighteen thousand, ninety-three".

Divisors: 1 41 71 2911 27763 1138283 1971173 80818093