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83435137 = 194391323
BaseRepresentation
bin1001111100100…
…01111010000001
312210222221111021
410332101322001
5132324411022
612140145441
72032121062
oct476217201
9183887437
1083435137
1143108065
1223b38281
1314393b06
14b11c569
1574d17c7
hex4f91e81

83435137 has 4 divisors (see below), whose sum is σ = 87826480. Its totient is φ = 79043796.

The previous prime is 83435119. The next prime is 83435141. The reversal of 83435137 is 73153438.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73153438 = 236576719.

It is a cyclic number.

It is not a de Polignac number, because 83435137 - 211 = 83433089 is a prime.

It is a super-2 number, since 2×834351372 = 13922844172417538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83435537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2195643 + ... + 2195680.

It is an arithmetic number, because the mean of its divisors is an integer number (21956620).

Almost surely, 283435137 is an apocalyptic number.

It is an amenable number.

83435137 is a deficient number, since it is larger than the sum of its proper divisors (4391343).

83435137 is a wasteful number, since it uses less digits than its factorization.

83435137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4391342.

The product of its digits is 30240, while the sum is 34.

The square root of 83435137 is about 9134.2836062824. The cubic root of 83435137 is about 436.9680273759.

The spelling of 83435137 in words is "eighty-three million, four hundred thirty-five thousand, one hundred thirty-seven".

Divisors: 1 19 4391323 83435137