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78816006 = 23212313557
BaseRepresentation
bin1001011001010…
…10001100000110
312111022021020100
410230222030012
5130134103011
611453144530
71644632163
oct454521406
9174267210
1078816006
11405426a5
122248b146
13134374b9
14a67906a
156dbcd56
hex4b2a306

78816006 has 24 divisors (see below), whose sum is σ = 170954784. Its totient is φ = 26243280.

The previous prime is 78815999. The next prime is 78816007. The reversal of 78816006 is 60061887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78816007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20380 + ... + 23936.

It is an arithmetic number, because the mean of its divisors is an integer number (7123116).

Almost surely, 278816006 is an apocalyptic number.

78816006 is an abundant number, since it is smaller than the sum of its proper divisors (92138778).

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

78816006 is a wasteful number, since it uses less digits than its factorization.

78816006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4796 (or 4793 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 78816006 is about 8877.8379124649. The cubic root of 78816006 is about 428.7506660763.

The spelling of 78816006 in words is "seventy-eight million, eight hundred sixteen thousand, six".

Divisors: 1 2 3 6 9 18 1231 2462 3557 3693 7114 7386 10671 11079 21342 22158 32013 64026 4378667 8757334 13136001 26272002 39408003 78816006