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80728048 = 245985517
BaseRepresentation
bin1001100111111…
…00111111110000
312121220102001201
410303330333300
5131131244143
612002140544
72000114512
oct463747760
9177812051
1080728048
11416291a5
1223051754
131395689b
14aa15bb2
15714964d
hex4cfcff0

80728048 has 20 divisors (see below), whose sum is σ = 159063480. Its totient is φ = 39679424.

The previous prime is 80728031. The next prime is 80728079. The reversal of 80728048 is 84082708.

It is a junction number, because it is equal to n+sod(n) for n = 80727998 and 80728016.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41815 + ... + 43702.

It is an arithmetic number, because the mean of its divisors is an integer number (7953174).

Almost surely, 280728048 is an apocalyptic number.

It is an amenable number.

80728048 is a deficient number, since it is larger than the sum of its proper divisors (78335432).

80728048 is a wasteful number, since it uses less digits than its factorization.

80728048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85584 (or 85578 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 80728048 is about 8984.8788528282. The cubic root of 80728048 is about 432.1901026609.

The spelling of 80728048 in words is "eighty million, seven hundred twenty-eight thousand, forty-eight".

Divisors: 1 2 4 8 16 59 118 236 472 944 85517 171034 342068 684136 1368272 5045503 10091006 20182012 40364024 80728048