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30023420505 = 35131071438937
BaseRepresentation
bin11011111101100010…
…010000101001011001
32212111101100210021020
4123331202100221121
5442441443424010
621443110033053
72112002602131
oct337542205131
985441323236
1030023420505
1111807490221
12599a948789
132aa61a53a0
14164b5c3ac1
15baac03470
hex6fd890a59

30023420505 has 32 divisors (see below), whose sum is σ = 52216182144. Its totient is φ = 14642612736.

The previous prime is 30023420477. The next prime is 30023420519. The reversal of 30023420505 is 50502432003.

It is not a de Polignac number, because 30023420505 - 25 = 30023420473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 698604 + ... + 740333.

It is an arithmetic number, because the mean of its divisors is an integer number (1631755692).

Almost surely, 230023420505 is an apocalyptic number.

It is an amenable number.

30023420505 is a deficient number, since it is larger than the sum of its proper divisors (22192761639).

30023420505 is a wasteful number, since it uses less digits than its factorization.

30023420505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439065.

The product of its (nonzero) digits is 3600, while the sum is 24.

Adding to 30023420505 its reverse (50502432003), we get a palindrome (80525852508).

The spelling of 30023420505 in words is "thirty billion, twenty-three million, four hundred twenty thousand, five hundred five".

Divisors: 1 3 5 13 15 39 65 107 195 321 535 1391 1605 4173 6955 20865 1438937 4316811 7194685 18706181 21584055 56118543 93530905 153966259 280592715 461898777 769831295 2001561367 2309493885 6004684101 10007806835 30023420505