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20306314405 = 5132313582819
BaseRepresentation
bin10010111010010110…
…011100010010100101
31221102011220122121201
4102322112130102211
5313041404030110
613154550442501
71316131552546
oct227226342245
957364818551
1020306314405
118680426623
123b28663431
131bb7ca6870
14da8c604cd
157dcac5b3a
hex4ba59c4a5

20306314405 has 16 divisors (see below), whose sum is σ = 27382965120. Its totient is φ = 14343455808.

The previous prime is 20306314381. The next prime is 20306314409. The reversal of 20306314405 is 50441360302.

It is a cyclic number.

It is not a de Polignac number, because 20306314405 - 29 = 20306313893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306314409) 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 15 ways as a sum of consecutive naturals, for example, 6789915 + ... + 6792904.

It is an arithmetic number, because the mean of its divisors is an integer number (1711435320).

Almost surely, 220306314405 is an apocalyptic number.

It is an amenable number.

20306314405 is a deficient number, since it is larger than the sum of its proper divisors (7076650715).

20306314405 is a wasteful number, since it uses less digits than its factorization.

20306314405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13582860.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 20306314405 its reverse (50441360302), we get a palindrome (70747674707).

The spelling of 20306314405 in words is "twenty billion, three hundred six million, three hundred fourteen thousand, four hundred five".

Divisors: 1 5 13 23 65 115 299 1495 13582819 67914095 176576647 312404837 882883235 1562024185 4061262881 20306314405