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86686808 = 23131749031
BaseRepresentation
bin1010010101010…
…11110001011000
320001010010221112
411022223301120
5134142434213
612333555452
72101553135
oct512536130
9201103845
1086686808
1144a2909a
1225045b88
1314c61b90
14b72758c
157924ea8
hex52abc58

86686808 has 32 divisors (see below), whose sum is σ = 185340960. Its totient is φ = 37655040.

The previous prime is 86686807. The next prime is 86686867. The reversal of 86686808 is 80868668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86686807) 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, 22748 + ... + 26283.

It is an arithmetic number, because the mean of its divisors is an integer number (5791905).

Almost surely, 286686808 is an apocalyptic number.

It is an amenable number.

86686808 is an abundant number, since it is smaller than the sum of its proper divisors (98654152).

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

86686808 is a wasteful number, since it uses less digits than its factorization.

86686808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49067 (or 49063 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 50.

The square root of 86686808 is about 9310.5750627982. The cubic root of 86686808 is about 442.5724107191.

The spelling of 86686808 in words is "eighty-six million, six hundred eighty-six thousand, eight hundred eight".

Divisors: 1 2 4 8 13 17 26 34 52 68 104 136 221 442 884 1768 49031 98062 196124 392248 637403 833527 1274806 1667054 2549612 3334108 5099224 6668216 10835851 21671702 43343404 86686808