Search a number
-
+
20430003413 = 138247147779
BaseRepresentation
bin10011000001101110…
…010001110011010101
31221201210122201001002
4103001232101303111
5313320040102123
613215125513045
71322163110111
oct230156216325
957653581032
1020430003413
118734227a46
123b61b72785
131c077c2921
14dbb45a741
157e88a9528
hex4c1b91cd5

20430003413 has 4 divisors (see below), whose sum is σ = 20430289440. Its totient is φ = 20429717388.

The previous prime is 20430003401. The next prime is 20430003431. The reversal of 20430003413 is 31430003402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20430003413 - 226 = 20362894549 is a prime.

It is a super-3 number, since 3×204300034133 (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430003493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64358 + ... + 212136.

It is an arithmetic number, because the mean of its divisors is an integer number (5107572360).

Almost surely, 220430003413 is an apocalyptic number.

It is an amenable number.

20430003413 is a deficient number, since it is larger than the sum of its proper divisors (286027).

20430003413 is a wasteful number, since it uses less digits than its factorization.

20430003413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286026.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20430003413 its reverse (31430003402), we get a palindrome (51860006815).

The spelling of 20430003413 in words is "twenty billion, four hundred thirty million, three thousand, four hundred thirteen".

Divisors: 1 138247 147779 20430003413