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8688450380 = 225434422519
BaseRepresentation
bin10000001011101111…
…10011101101001100
3211102111212000021112
420011313303231030
5120243220403010
63554051351152
7425210416061
oct100567635514
924374760245
108688450380
113759449405
1218258b24b8
13a8606a4cc
145c5cb6c68
1535cb8aa05
hex205df3b4c

8688450380 has 12 divisors (see below), whose sum is σ = 18245745840. Its totient is φ = 3475380144.

The previous prime is 8688450377. The next prime is 8688450413. The reversal of 8688450380 is 830548868.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217211240 + ... + 217211279.

It is an arithmetic number, because the mean of its divisors is an integer number (1520478820).

Almost surely, 28688450380 is an apocalyptic number.

It is an amenable number.

8688450380 is an abundant number, since it is smaller than the sum of its proper divisors (9557295460).

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

8688450380 is a wasteful number, since it uses less digits than its factorization.

8688450380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434422528 (or 434422526 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 50.

The square root of 8688450380 is about 93211.8575075081. The cubic root of 8688450380 is about 2055.7995897833.

The spelling of 8688450380 in words is "eight billion, six hundred eighty-eight million, four hundred fifty thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 434422519 868845038 1737690076 2172112595 4344225190 8688450380