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7997898608 = 2471719221083
BaseRepresentation
bin1110111001011011…
…00011111101110000
3202122101110100022222
413130231203331300
5112334430223413
63401342420212
7402124005440
oct73455437560
922571410288
107997898608
113434672667
121672591668
139a5c887ab
1455c2bc120
1531c232b08
hex1dcb63f70

7997898608 has 80 divisors (see below), whose sum is σ = 19738379520. Its totient is φ = 3056237568.

The previous prime is 7997898593. The next prime is 7997898619. The reversal of 7997898608 is 8068987997.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74366 + ... + 146717.

It is an arithmetic number, because the mean of its divisors is an integer number (246729744).

Almost surely, 27997898608 is an apocalyptic number.

It is an amenable number.

7997898608 is an abundant number, since it is smaller than the sum of its proper divisors (11740480912).

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

7997898608 is a wasteful number, since it uses less digits than its factorization.

7997898608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221134 (or 221128 counting only the distinct ones).

The product of its (nonzero) digits is 109734912, while the sum is 71.

The square root of 7997898608 is about 89430.9711900749. The cubic root of 7997898608 is about 1999.8248686650.

The spelling of 7997898608 in words is "seven billion, nine hundred ninety-seven million, eight hundred ninety-eight thousand, six hundred eight".

Divisors: 1 2 4 7 8 14 16 17 19 28 34 38 56 68 76 112 119 133 136 152 238 266 272 304 323 476 532 646 952 1064 1292 1904 2128 2261 2584 4522 5168 9044 18088 36176 221083 442166 884332 1547581 1768664 3095162 3537328 3758411 4200577 6190324 7516822 8401154 12380648 15033644 16802308 24761296 26308877 29404039 30067288 33604616 52617754 58808078 60134576 67209232 71409809 105235508 117616156 142819618 210471016 235232312 285639236 420942032 470464624 499868663 571278472 999737326 1142556944 1999474652 3998949304 7997898608