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82115630 = 258211563
BaseRepresentation
bin1001110010011…
…11110000101110
312201111220110122
410321033300232
5132010200010
612052004542
72014654112
oct471176056
9181456418
1082115630
1142396763
1223600752
131402133c
14ac97742
157320855
hex4e4fc2e

82115630 has 8 divisors (see below), whose sum is σ = 147808152. Its totient is φ = 32846248.

The previous prime is 82115623. The next prime is 82115653. The reversal of 82115630 is 3651128.

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

It is a self number, because there is not a number n which added to its sum of digits gives 82115630.

It is a congruent number.

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, 4105772 + ... + 4105791.

It is an arithmetic number, because the mean of its divisors is an integer number (18476019).

Almost surely, 282115630 is an apocalyptic number.

82115630 is a deficient number, since it is larger than the sum of its proper divisors (65692522).

82115630 is a wasteful number, since it uses less digits than its factorization.

82115630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211570.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 82115630 is about 9061.7674876373. The cubic root of 82115630 is about 434.6522609561.

Adding to 82115630 its reverse (3651128), we get a palindrome (85766758).

The spelling of 82115630 in words is "eighty-two million, one hundred fifteen thousand, six hundred thirty".

Divisors: 1 2 5 10 8211563 16423126 41057815 82115630