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83074971 = 3717972399
BaseRepresentation
bin1001111001110…
…01111110011011
312210022122102210
410330321332123
5132231344341
612124330203
72026061040
oct474717633
9183278383
1083074971
1142991501
12239a3963
1314298bb5
14b0671c7
15745ec16
hex4f39f9b

83074971 has 32 divisors (see below), whose sum is σ = 135475200. Its totient is φ = 44199936.

The previous prime is 83074967. The next prime is 83074987. The reversal of 83074971 is 17947038.

It is not a de Polignac number, because 83074971 - 22 = 83074967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83074921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33430 + ... + 35828.

It is an arithmetic number, because the mean of its divisors is an integer number (4233600).

Almost surely, 283074971 is an apocalyptic number.

83074971 is a deficient number, since it is larger than the sum of its proper divisors (52400229).

83074971 is a wasteful number, since it uses less digits than its factorization.

83074971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 83074971 is about 9114.5472185951. The cubic root of 83074971 is about 436.3383644889.

The spelling of 83074971 in words is "eighty-three million, seventy-four thousand, nine hundred seventy-one".

Divisors: 1 3 7 17 21 51 97 119 291 357 679 1649 2037 2399 4947 7197 11543 16793 34629 40783 50379 122349 232703 285481 698109 856443 1628921 3955951 4886763 11867853 27691657 83074971