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82355828 = 2227137589
BaseRepresentation
bin1001110100010…
…10011001110100
312201222002221212
410322022121310
5132040341303
612101100552
72020004312
oct472123164
9181862855
1082355828
1142540175
12236b7758
13140a6779
14ad1b0b2
15736bad8
hex4e8a674

82355828 has 12 divisors (see below), whose sum is σ = 144194820. Its totient is φ = 41157312.

The previous prime is 82355783. The next prime is 82355843. The reversal of 82355828 is 82855328.

It can be written as a sum of positive squares in 2 ways, for example, as 41113744 + 41242084 = 6412^2 + 6422^2 .

It is a congruent number.

It is an unprimeable number.

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, 7058 + ... + 14646.

It is an arithmetic number, because the mean of its divisors is an integer number (12016235).

Almost surely, 282355828 is an apocalyptic number.

It is an amenable number.

82355828 is a deficient number, since it is larger than the sum of its proper divisors (61838992).

82355828 is a wasteful number, since it uses less digits than its factorization.

82355828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10306 (or 10304 counting only the distinct ones).

The product of its digits is 153600, while the sum is 41.

The square root of 82355828 is about 9075.0111845661. The cubic root of 82355828 is about 435.0756516155.

Subtracting 82355828 from its reverse (82855328), we obtain a triangular number (499500 = T999).

The spelling of 82355828 in words is "eighty-two million, three hundred fifty-five thousand, eight hundred twenty-eight".

Divisors: 1 2 4 2713 5426 7589 10852 15178 30356 20588957 41177914 82355828