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20063807 = 21539319
BaseRepresentation
bin100110010001…
…0011000111111
31101202100100222
41030202120333
520114020212
61554011555
7332353031
oct114423077
941670328
1020063807
1110364265
126876bbb
13420649a
142943c51
151b64c72
hex132263f

20063807 has 4 divisors (see below), whose sum is σ = 20075280. Its totient is φ = 20052336.

The previous prime is 20063803. The next prime is 20063809. The reversal of 20063807 is 70836002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 70836002 = 235418001.

It is a cyclic number.

It is not a de Polignac number, because 20063807 - 22 = 20063803 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20063803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2507 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (5018820).

Almost surely, 220063807 is an apocalyptic number.

20063807 is a deficient number, since it is larger than the sum of its proper divisors (11473).

20063807 is an equidigital number, since it uses as much as digits as its factorization.

20063807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11472.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 20063807 is about 4479.2641136687. The cubic root of 20063807 is about 271.7301199634.

Adding to 20063807 its reverse (70836002), we get a palindrome (90899809).

The spelling of 20063807 in words is "twenty million, sixty-three thousand, eight hundred seven".

Divisors: 1 2153 9319 20063807