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84120083 = 4347107389
BaseRepresentation
bin1010000001110…
…01001000010011
312212021202001122
411000321020103
5133013320313
612202552455
72041003025
oct500711023
9185252048
1084120083
1143535733
122420872b
13145737c8
14b25a015
1575b9708
hex5039213

84120083 has 16 divisors (see below), whose sum is σ = 88957440. Its totient is φ = 79459296.

The previous prime is 84120077. The next prime is 84120089. The reversal of 84120083 is 38002148.

It is an interprime number because it is at equal distance from previous prime (84120077) and next prime (84120089).

It is a cyclic number.

It is not a de Polignac number, because 84120083 - 24 = 84120067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84120089) 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, 216053 + ... + 216441.

It is an arithmetic number, because the mean of its divisors is an integer number (5559840).

Almost surely, 284120083 is an apocalyptic number.

84120083 is a deficient number, since it is larger than the sum of its proper divisors (4837357).

84120083 is a wasteful number, since it uses less digits than its factorization.

84120083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586.

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 84120083 is about 9171.7001150277. The cubic root of 84120083 is about 438.1605073980.

The spelling of 84120083 in words is "eighty-four million, one hundred twenty thousand, eighty-three".

Divisors: 1 43 47 107 389 2021 4601 5029 16727 18283 41623 216247 786169 1789789 1956281 84120083