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82383161 = 721681289
BaseRepresentation
bin1001110100100…
…01000100111001
312202000111110012
410322101010321
5132042230121
612101431305
72020150100
oct472210471
9182014405
1082383161
1142559763
122370b535
13140b6043
14ad27037
157374c5b
hex4e91139

82383161 has 6 divisors (see below), whose sum is σ = 95833530. Its totient is φ = 70614096.

The previous prime is 82383137. The next prime is 82383209. The reversal of 82383161 is 16138328.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 48219136 + 34164025 = 6944^2 + 5845^2 .

It is not a de Polignac number, because 82383161 - 214 = 82366777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82383121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 840596 + ... + 840693.

It is an arithmetic number, because the mean of its divisors is an integer number (15972255).

Almost surely, 282383161 is an apocalyptic number.

It is an amenable number.

82383161 is a deficient number, since it is larger than the sum of its proper divisors (13450369).

82383161 is a wasteful number, since it uses less digits than its factorization.

82383161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681303 (or 1681296 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 82383161 is about 9076.5170081921. The cubic root of 82383161 is about 435.1237785776.

The spelling of 82383161 in words is "eighty-two million, three hundred eighty-three thousand, one hundred sixty-one".

Divisors: 1 7 49 1681289 11769023 82383161