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78016448 = 264328349
BaseRepresentation
bin1001010011001…
…10111111000000
312102210122110002
410221212333000
5124433011243
611424055132
71635062126
oct451467700
9172718402
1078016448
1140046a04
12221644a8
13132175a3
14a50b916
156cb0eb8
hex4a66fc0

78016448 has 28 divisors (see below), whose sum is σ = 158419800. Its totient is φ = 38099712.

The previous prime is 78016447. The next prime is 78016459. The reversal of 78016448 is 84461087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78016441) 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 3 ways as a sum of consecutive naturals, for example, 11423 + ... + 16926.

It is an arithmetic number, because the mean of its divisors is an integer number (5657850).

Almost surely, 278016448 is an apocalyptic number.

It is an amenable number.

78016448 is an abundant number, since it is smaller than the sum of its proper divisors (80403352).

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

78016448 is a wasteful number, since it uses less digits than its factorization.

78016448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28404 (or 28394 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 78016448 is about 8832.6920018758. The cubic root of 78016448 is about 427.2958988325.

The spelling of 78016448 in words is "seventy-eight million, sixteen thousand, four hundred forty-eight".

Divisors: 1 2 4 8 16 32 43 64 86 172 344 688 1376 2752 28349 56698 113396 226792 453584 907168 1219007 1814336 2438014 4876028 9752056 19504112 39008224 78016448