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82801395 = 3251840031
BaseRepresentation
bin1001110111101…
…11001011110011
312202210202011100
410323313023303
5132144121040
612114415443
72023541325
oct473671363
9182722140
1082801395
1142814a06
1223891583
1314201511
14add5615
157408b30
hex4ef72f3

82801395 has 12 divisors (see below), whose sum is σ = 143522496. Its totient is φ = 44160720.

The previous prime is 82801393. The next prime is 82801399. The reversal of 82801395 is 59310828.

It is not a de Polignac number, because 82801395 - 21 = 82801393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82801393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919971 + ... + 920060.

It is an arithmetic number, because the mean of its divisors is an integer number (11960208).

Almost surely, 282801395 is an apocalyptic number.

82801395 is a deficient number, since it is larger than the sum of its proper divisors (60721101).

82801395 is a wasteful number, since it uses less digits than its factorization.

82801395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840042 (or 1840039 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 82801395 is about 9099.5271855190. The cubic root of 82801395 is about 435.8588659572.

The spelling of 82801395 in words is "eighty-two million, eight hundred one thousand, three hundred ninety-five".

Divisors: 1 3 5 9 15 45 1840031 5520093 9200155 16560279 27600465 82801395