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87783969080 = 23521269103183
BaseRepresentation
bin101000111000001010…
…1010001000100111000
322101120211000200012002
41101300111101010320
52414240144002310
6104154415040132
76225240266003
oct1216025210470
9271524020162
1087783969080
1134257842285
121501a810048
13837c999c92
14436a88a53a
15243ba44da5
hex1470551138

87783969080 has 32 divisors (see below), whose sum is σ = 197525131200. Its totient is φ = 35111596416.

The previous prime is 87783969071. The next prime is 87783969089. The reversal of 87783969080 is 8096938778.

It is an interprime number because it is at equal distance from previous prime (87783969071) and next prime (87783969089).

It is a junction number, because it is equal to n+sod(n) for n = 87783968998 and 87783969016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87783969089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799169 + ... + 902351.

It is an arithmetic number, because the mean of its divisors is an integer number (6172660350).

Almost surely, 287783969080 is an apocalyptic number.

It is an amenable number.

87783969080 is an abundant number, since it is smaller than the sum of its proper divisors (109741162120).

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

87783969080 is a wasteful number, since it uses less digits than its factorization.

87783969080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124463 (or 124459 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 65.

The spelling of 87783969080 in words is "eighty-seven billion, seven hundred eighty-three million, nine hundred sixty-nine thousand, eighty".

Divisors: 1 2 4 5 8 10 20 40 21269 42538 85076 103183 106345 170152 206366 212690 412732 425380 515915 825464 850760 1031830 2063660 4127320 2194599227 4389198454 8778396908 10972996135 17556793816 21945992270 43891984540 87783969080