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30242103505 = 517355789453
BaseRepresentation
bin11100001010100100…
…011110000011010001
32220001121212000221121
4130022210132003101
5443413434303010
621520521122241
72120266431655
oct341244360321
986047760847
1030242103505
1111909973a79
125a40029381
132b0c5a1503
14166c66aa65
15bbeeed3da
hex70a91e0d1

30242103505 has 8 divisors (see below), whose sum is σ = 38425261032. Its totient is φ = 22770524928.

The previous prime is 30242103499. The next prime is 30242103509. The reversal of 30242103505 is 50530124203.

It can be written as a sum of positive squares in 4 ways, for example, as 489648384 + 29752455121 = 22128^2 + 172489^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30242103505 - 211 = 30242101457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30242103505.

It is not an unprimeable number, because it can be changed into a prime (30242103509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177894642 + ... + 177894811.

It is an arithmetic number, because the mean of its divisors is an integer number (4803157629).

Almost surely, 230242103505 is an apocalyptic number.

It is an amenable number.

30242103505 is a deficient number, since it is larger than the sum of its proper divisors (8183157527).

30242103505 is a wasteful number, since it uses less digits than its factorization.

30242103505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355789475.

The product of its (nonzero) digits is 3600, while the sum is 25.

Adding to 30242103505 its reverse (50530124203), we get a palindrome (80772227708).

The spelling of 30242103505 in words is "thirty billion, two hundred forty-two million, one hundred three thousand, five hundred five".

Divisors: 1 5 17 85 355789453 1778947265 6048420701 30242103505