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20000480 = 255125003
BaseRepresentation
bin100110001001…
…0111011100000
31101122010111112
41030102323200
520110003410
61552402452
7332000303
oct114227340
941563445
1020000480
1110320725
126846428
1341b3706
142928b3a
151b51105
hex1312ee0

20000480 has 24 divisors (see below), whose sum is σ = 47251512. Its totient is φ = 8000128.

The previous prime is 20000471. The next prime is 20000503. The reversal of 20000480 is 8400002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62342 + ... + 62661.

It is an arithmetic number, because the mean of its divisors is an integer number (1968813).

Almost surely, 220000480 is an apocalyptic number.

20000480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000480 is an abundant number, since it is smaller than the sum of its proper divisors (27251032).

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

20000480 is a wasteful number, since it uses less digits than its factorization.

20000480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125018 (or 125010 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 20000480 is about 4472.1896203090. The cubic root of 20000480 is about 271.4439331762.

Adding to 20000480 its reverse (8400002), we get a palindrome (28400482).

The spelling of 20000480 in words is "twenty million, four hundred eighty", and thus it is an aban number.

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 125003 250006 500012 625015 1000024 1250030 2000048 2500060 4000096 5000120 10000240 20000480