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78050120 = 2351951253
BaseRepresentation
bin1001010011011…
…11001101001000
312102212100122012
410221233031020
5124440100440
611424515052
71635262241
oct451571510
9172770565
1078050120
114006a235
122217ba88
1313229a05
14a519cc8
156cbae65
hex4a6f348

78050120 has 16 divisors (see below), whose sum is σ = 175612860. Its totient is φ = 31220032.

The previous prime is 78050113. The next prime is 78050143. The reversal of 78050120 is 2105087.

It can be written as a sum of positive squares in 2 ways, for example, as 76073284 + 1976836 = 8722^2 + 1406^2 .

It is an unprimeable number.

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, 975587 + ... + 975666.

Almost surely, 278050120 is an apocalyptic number.

It is an amenable number.

78050120 is an abundant number, since it is smaller than the sum of its proper divisors (97562740).

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

78050120 is a wasteful number, since it uses less digits than its factorization.

78050120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951264 (or 1951260 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 78050120 is about 8834.5978969051. The cubic root of 78050120 is about 427.3573638117.

The spelling of 78050120 in words is "seventy-eight million, fifty thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1951253 3902506 7805012 9756265 15610024 19512530 39025060 78050120