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8668202020 = 2253113980971
BaseRepresentation
bin10000001001010101…
…00100010000100100
3211101002202021202021
420010222210100210
5120223024431040
63552045352524
7424543334002
oct100452442044
924332667667
108668202020
113748a79525
12181ab68744
13a81acb02a
145c3325a72
1535aedb24a
hex204aa4424

8668202020 has 24 divisors (see below), whose sum is σ = 18790426368. Its totient is φ = 3355432800.

The previous prime is 8668201991. The next prime is 8668202033. The reversal of 8668202020 is 202028668.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6989866 + ... + 6991105.

It is an arithmetic number, because the mean of its divisors is an integer number (782934432).

Almost surely, 28668202020 is an apocalyptic number.

It is an amenable number.

8668202020 is an abundant number, since it is smaller than the sum of its proper divisors (10122224348).

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

8668202020 is a wasteful number, since it uses less digits than its factorization.

8668202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13981011 (or 13981009 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8668202020 is about 93103.1794301355. The cubic root of 8668202020 is about 2054.2013397279.

The spelling of 8668202020 in words is "eight billion, six hundred sixty-eight million, two hundred two thousand, twenty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 13980971 27961942 55923884 69904855 139809710 279619420 433410101 866820202 1733640404 2167050505 4334101010 8668202020