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82432388 = 22171212241
BaseRepresentation
bin1001110100111…
…01000110000100
312202002222222102
410322131012010
5132100314023
612102451232
72020443443
oct472350604
9182088872
1082432388
1142592745
1223733b18
131410257c
14ad3ad5a
157384628
hex4e9d184

82432388 has 12 divisors (see below), whose sum is σ = 152742492. Its totient is φ = 38791680.

The previous prime is 82432351. The next prime is 82432397. The reversal of 82432388 is 88323428.

It can be written as a sum of positive squares in 2 ways, for example, as 73239364 + 9193024 = 8558^2 + 3032^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606053 + ... + 606188.

It is an arithmetic number, because the mean of its divisors is an integer number (12728541).

Almost surely, 282432388 is an apocalyptic number.

It is an amenable number.

82432388 is a deficient number, since it is larger than the sum of its proper divisors (70310104).

82432388 is a wasteful number, since it uses less digits than its factorization.

82432388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212262 (or 1212260 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 82432388 is about 9079.2283813108. The cubic root of 82432388 is about 435.2104288631.

The spelling of 82432388 in words is "eighty-two million, four hundred thirty-two thousand, three hundred eighty-eight".

Divisors: 1 2 4 17 34 68 1212241 2424482 4848964 20608097 41216194 82432388