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85515108 = 22378271231
BaseRepresentation
bin1010001100011…
…01101101100100
312221220121200020
411012031231210
5133342440413
612252515140
72055603120
oct506155544
9187817606
1085515108
11442a8848
122477bab0
1314941773
14b500580
157792c23
hex518db64

85515108 has 48 divisors (see below), whose sum is σ = 228501504. Its totient is φ = 24383520.

The previous prime is 85515077. The next prime is 85515109. The reversal of 85515108 is 80151558.

It is not an unprimeable number, because it can be changed into a prime (85515109) 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 15 ways as a sum of consecutive naturals, for example, 68853 + ... + 70083.

It is an arithmetic number, because the mean of its divisors is an integer number (4760448).

Almost surely, 285515108 is an apocalyptic number.

It is an amenable number.

85515108 is an abundant number, since it is smaller than the sum of its proper divisors (142986396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85515108 is a wasteful number, since it uses less digits than its factorization.

85515108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2072 (or 2070 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 85515108 is about 9247.4379154445. The cubic root of 85515108 is about 440.5693524815.

The spelling of 85515108 in words is "eighty-five million, five hundred fifteen thousand, one hundred eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 827 1231 1654 2462 2481 3308 3693 4924 4962 5789 7386 8617 9924 11578 14772 17234 17367 23156 25851 34468 34734 51702 69468 103404 1018037 2036074 3054111 4072148 6108222 7126259 12216444 14252518 21378777 28505036 42757554 85515108