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20030384 = 2411113809
BaseRepresentation
bin100110001101…
…0001110110000
31101200122112002
41030122032300
520111433014
61553153132
7332153423
oct114321660
941618462
1020030384
1110341140
12685b7a8
1341c41ca
1429359ba
151b59dde
hex131a3b0

20030384 has 20 divisors (see below), whose sum is σ = 42337320. Its totient is φ = 9104640.

The previous prime is 20030383. The next prime is 20030407. The reversal of 20030384 is 48303002.

It is not an unprimeable number, because it can be changed into a prime (20030383) by changing a digit.

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, 56729 + ... + 57080.

It is an arithmetic number, because the mean of its divisors is an integer number (2116866).

Almost surely, 220030384 is an apocalyptic number.

It is an amenable number.

20030384 is an abundant number, since it is smaller than the sum of its proper divisors (22306936).

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

20030384 is a wasteful number, since it uses less digits than its factorization.

20030384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113828 (or 113822 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20030384 is about 4475.5317002564. The cubic root of 20030384 is about 271.5791502175.

Adding to 20030384 its reverse (48303002), we get a palindrome (68333386).

The spelling of 20030384 in words is "twenty million, thirty thousand, three hundred eighty-four".

Divisors: 1 2 4 8 11 16 22 44 88 176 113809 227618 455236 910472 1251899 1820944 2503798 5007596 10015192 20030384