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83091033 = 329232337
BaseRepresentation
bin1001111001111…
…01111001011001
312210100110110200
410330331321121
5132232403113
612124532413
72026155624
oct474757131
9183313420
1083091033
11429a2583
12239b1109
13142a32bc
14b06cdbb
157464873
hex4f3de59

83091033 has 6 divisors (see below), whose sum is σ = 120020394. Its totient is φ = 55394016.

The previous prime is 83091031. The next prime is 83091037. The reversal of 83091033 is 33019038.

It can be written as a sum of positive squares in only one way, i.e., 67026969 + 16064064 = 8187^2 + 4008^2 .

It is not a de Polignac number, because 83091033 - 21 = 83091031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83090988 and 83091006.

It is not an unprimeable number, because it can be changed into a prime (83091031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4616160 + ... + 4616177.

It is an arithmetic number, because the mean of its divisors is an integer number (20003399).

Almost surely, 283091033 is an apocalyptic number.

It is an amenable number.

83091033 is a deficient number, since it is larger than the sum of its proper divisors (36929361).

83091033 is a wasteful number, since it uses less digits than its factorization.

83091033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232343 (or 9232340 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 83091033 is about 9115.4282949294. The cubic root of 83091033 is about 436.3664837291.

The spelling of 83091033 in words is "eighty-three million, ninety-one thousand, thirty-three".

Divisors: 1 3 9 9232337 27697011 83091033