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82868365 = 525764489
BaseRepresentation
bin1001111000001…
…11100010001101
312202221011000201
410330013202031
5132203241430
612120053501
72024240506
oct474074215
9182834021
1082868365
1142860258
1223904291
1314225b48
14b011bad
15741d8ca
hex4f0788d

82868365 has 8 divisors (see below), whose sum is σ = 99830520. Its totient is φ = 66035712.

The previous prime is 82868323. The next prime is 82868369. The reversal of 82868365 is 56386828.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 35354916 + 47513449 = 5946^2 + 6893^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-82868365 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82868369) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30960 + ... + 33529.

It is an arithmetic number, because the mean of its divisors is an integer number (12478815).

Almost surely, 282868365 is an apocalyptic number.

It is an amenable number.

82868365 is a deficient number, since it is larger than the sum of its proper divisors (16962155).

82868365 is a wasteful number, since it uses less digits than its factorization.

82868365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64751.

The product of its digits is 552960, while the sum is 46.

The square root of 82868365 is about 9103.2063032758. The cubic root of 82868365 is about 435.9763422480.

The spelling of 82868365 in words is "eighty-two million, eight hundred sixty-eight thousand, three hundred sixty-five".

Divisors: 1 5 257 1285 64489 322445 16573673 82868365