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808828691390 = 251091136566767
BaseRepresentation
bin10111100010100011111…
…00100110001110111110
32212022201122212201202122
423301101330212032332
5101222440121111030
61415323141522542
7112302346304036
oct13612174461676
92768648781678
10808828691390
1129202778a265
1211090b113452
135b3700a9b15
142b20cb068c6
151608d4308e5
hexbc51f263be

808828691390 has 32 divisors (see below), whose sum is σ = 1482250872960. Its totient is φ = 317726406144.

The previous prime is 808828691387. The next prime is 808828691401. The reversal of 808828691390 is 93196828808.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3160214 + ... + 3406553.

It is an arithmetic number, because the mean of its divisors is an integer number (46320339780).

Almost surely, 2808828691390 is an apocalyptic number.

808828691390 is a deficient number, since it is larger than the sum of its proper divisors (673422181570).

808828691390 is a wasteful number, since it uses less digits than its factorization.

808828691390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6566996.

The product of its (nonzero) digits is 11943936, while the sum is 62.

The spelling of 808828691390 in words is "eight hundred eight billion, eight hundred twenty-eight million, six hundred ninety-one thousand, three hundred ninety".

Divisors: 1 2 5 10 109 113 218 226 545 565 1090 1130 12317 24634 61585 123170 6566767 13133534 32833835 65667670 715777603 742044671 1431555206 1484089342 3578888015 3710223355 7157776030 7420446710 80882869139 161765738278 404414345695 808828691390