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20201200 = 245250503
BaseRepresentation
bin100110100001…
…1111011110000
31102000022211121
41031003323300
520132414300
62000552024
7333464425
oct115037360
942008747
1020201200
1110448508
126922614
134253b96
14297bd4c
151b9081a
hex1343ef0

20201200 has 30 divisors (see below), whose sum is σ = 48534344. Its totient is φ = 8080320.

The previous prime is 20201191. The next prime is 20201227. The reversal of 20201200 is 210202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24852 + ... + 25651.

Almost surely, 220201200 is an apocalyptic number.

20201200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20201200 is an abundant number, since it is smaller than the sum of its proper divisors (28333144).

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

20201200 is a wasteful number, since it uses less digits than its factorization.

20201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50521 (or 50510 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 20201200 is about 4494.5745071141. The cubic root of 20201200 is about 272.3489609920.

Adding to 20201200 its reverse (210202), we get a palindrome (20411402).

The spelling of 20201200 in words is "twenty million, two hundred one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 80 100 200 400 50503 101006 202012 252515 404024 505030 808048 1010060 1262575 2020120 2525150 4040240 5050300 10100600 20201200