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78071080 = 2356729131
BaseRepresentation
bin1001010011101…
…00010100101000
312102220102101111
410221310110220
5124441233310
611425200104
71635410323
oct451642450
9172812344
1078071080
1140083a5a
1222190034
1313236409
14a5237ba
156cc228a
hex4a74528

78071080 has 32 divisors (see below), whose sum is σ = 178287840. Its totient is φ = 30761280.

The previous prime is 78071069. The next prime is 78071087. The reversal of 78071080 is 8017087.

It is not an unprimeable number, because it can be changed into a prime (78071087) 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 7 ways as a sum of consecutive naturals, for example, 11886 + ... + 17245.

It is an arithmetic number, because the mean of its divisors is an integer number (5571495).

Almost surely, 278071080 is an apocalyptic number.

It is an amenable number.

78071080 is an abundant number, since it is smaller than the sum of its proper divisors (100216760).

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

78071080 is a wasteful number, since it uses less digits than its factorization.

78071080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29209 (or 29205 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 78071080 is about 8835.7840625493. The cubic root of 78071080 is about 427.3956153379.

The spelling of 78071080 in words is "seventy-eight million, seventy-one thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 67 134 268 335 536 670 1340 2680 29131 58262 116524 145655 233048 291310 582620 1165240 1951777 3903554 7807108 9758885 15614216 19517770 39035540 78071080