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2008888820 = 225200350147
BaseRepresentation
bin111011110111101…
…0011010111110100
312012000002010101122
41313233103113310
513103233420240
6531201243112
7100532162501
oct16757232764
95160063348
102008888820
11940a689a4
12480933498
1326026a213
14150b304a8
15bb56b4b5
hex77bd35f4

2008888820 has 24 divisors (see below), whose sum is σ = 4220856864. Its totient is φ = 803138336.

The previous prime is 2008888789. The next prime is 2008888823. The reversal of 2008888820 is 288888002.

It is a super-2 number, since 2×20088888202 = 8071268582241984800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2008888823) 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, 14987 + ... + 65133.

It is an arithmetic number, because the mean of its divisors is an integer number (175869036).

Almost surely, 22008888820 is an apocalyptic number.

2008888820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2008888820 is an abundant number, since it is smaller than the sum of its proper divisors (2211968044).

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

2008888820 is a wasteful number, since it uses less digits than its factorization.

2008888820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52159 (or 52157 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 44.

The square root of 2008888820 is about 44820.6294020956. The cubic root of 2008888820 is about 1261.7848267242.

The spelling of 2008888820 in words is "two billion, eight million, eight hundred eighty-eight thousand, eight hundred twenty".

Divisors: 1 2 4 5 10 20 2003 4006 8012 10015 20030 40060 50147 100294 200588 250735 501470 1002940 100444441 200888882 401777764 502222205 1004444410 2008888820