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83085807 = 3712173251
BaseRepresentation
bin1001111001111…
…00100111101111
312210100012022010
410330330213233
5132232221212
612124452303
72026134450
oct474744757
9183305263
1083085807
1142999662
12239aa093
13142a0acc
14b06b127
15746303c
hex4f3c9ef

83085807 has 16 divisors (see below), whose sum is σ = 126749952. Its totient is φ = 47424000.

The previous prime is 83085791. The next prime is 83085809. The reversal of 83085807 is 70858038.

It is not a de Polignac number, because 83085807 - 24 = 83085791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83085809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23932 + ... + 27182.

It is an arithmetic number, because the mean of its divisors is an integer number (7921872).

Almost surely, 283085807 is an apocalyptic number.

83085807 is a deficient number, since it is larger than the sum of its proper divisors (43664145).

83085807 is a wasteful number, since it uses less digits than its factorization.

83085807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 83085807 is about 9115.1416335677. The cubic root of 83085807 is about 436.3573351323.

The spelling of 83085807 in words is "eighty-three million, eighty-five thousand, eight hundred seven".

Divisors: 1 3 7 21 1217 3251 3651 8519 9753 22757 25557 68271 3956467 11869401 27695269 83085807