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78829201080 = 23335719678191
BaseRepresentation
bin100100101101010010…
…1100010011010111000
321112110202001022211000
41021122211202122320
52242420233413310
6100114051205000
75460314103450
oct1113245423270
9245422038730
1078829201080
1130482035573
121333b8a6760
1375836c5aa6
143b5b48ad60
1520b58004c0
hex125a9626b8

78829201080 has 512 divisors, whose sum is σ = 320864256000. Its totient is φ = 16812956160.

The previous prime is 78829201063. The next prime is 78829201111. The reversal of 78829201080 is 8010292887.

It is a happy number.

It is a super-2 number, since 2×788292010802 (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 127 ways as a sum of consecutive naturals, for example, 9619785 + ... + 9627975.

It is an arithmetic number, because the mean of its divisors is an integer number (626688000).

Almost surely, 278829201080 is an apocalyptic number.

78829201080 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78829201080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160432128000).

78829201080 is an abundant number, since it is smaller than the sum of its proper divisors (242035054920).

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

78829201080 is a wasteful number, since it uses less digits than its factorization.

78829201080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304 (or 8294 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 45.

The spelling of 78829201080 in words is "seventy-eight billion, eight hundred twenty-nine million, two hundred one thousand, eighty".