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8078828557 = 1913121115383
BaseRepresentation
bin1111000011000100…
…10010010000001101
3202212000202000100111
413201202102100031
5113021140003212
63413353200021
7404125624012
oct74142222015
922760660314
108078828557
113476319518
121695700011
139b9983237
14568d47709
153243bbea7
hex1e189240d

8078828557 has 16 divisors (see below), whose sum is σ = 8610117120. Its totient is φ = 7558714800.

The previous prime is 8078828539. The next prime is 8078828561. The reversal of 8078828557 is 7558288708.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8078828557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078828567) 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 15 ways as a sum of consecutive naturals, for example, 517488 + ... + 532870.

It is an arithmetic number, because the mean of its divisors is an integer number (538132320).

Almost surely, 28078828557 is an apocalyptic number.

It is an amenable number.

8078828557 is a deficient number, since it is larger than the sum of its proper divisors (531288563).

8078828557 is a wasteful number, since it uses less digits than its factorization.

8078828557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15744.

The product of its (nonzero) digits is 10035200, while the sum is 58.

The square root of 8078828557 is about 89882.3039146194. The cubic root of 8078828557 is about 2006.5475875734.

The spelling of 8078828557 in words is "eight billion, seventy-eight million, eight hundred twenty-eight thousand, five hundred fifty-seven".

Divisors: 1 19 131 211 2489 4009 15383 27641 292277 525179 2015173 3245813 38288287 61670447 425201503 8078828557