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82184485 = 535574621
BaseRepresentation
bin1001110011000…
…00100100100101
312201122101220211
410321200210211
5132014400420
612053255421
72015361625
oct471404445
9181571824
1082184485
1142433469
1223634571
1314046796
14acb4885
157335e5a
hex4e60925

82184485 has 8 divisors (see below), whose sum is σ = 98670456. Its totient is φ = 65714880.

The previous prime is 82184483. The next prime is 82184489. The reversal of 82184485 is 58448128.

It can be written as a sum of positive squares in 4 ways, for example, as 155236 + 82029249 = 394^2 + 9057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82184485 - 21 = 82184483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82184483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15475 + ... + 20095.

It is an arithmetic number, because the mean of its divisors is an integer number (12333807).

Almost surely, 282184485 is an apocalyptic number.

It is an amenable number.

82184485 is a deficient number, since it is larger than the sum of its proper divisors (16485971).

82184485 is a wasteful number, since it uses less digits than its factorization.

82184485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8183.

The product of its digits is 81920, while the sum is 40.

The square root of 82184485 is about 9065.5658951882. The cubic root of 82184485 is about 434.7737141651.

The spelling of 82184485 in words is "eighty-two million, one hundred eighty-four thousand, four hundred eighty-five".

Divisors: 1 5 3557 4621 17785 23105 16436897 82184485