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30243840853 = 157343356113
BaseRepresentation
bin11100001010101011…
…000110001101010101
32220001202010022010211
4130022223012031111
5443414410401403
621521022245421
72120320256062
oct341253061525
986052108124
1030243840853
111190a9502a6
125a40726871
132b0ca5c225
14166c99dc69
15bc024306d
hex70aac6355

30243840853 has 8 divisors (see below), whose sum is σ = 30445885208. Its totient is φ = 30041915904.

The previous prime is 30243840841. The next prime is 30243840863. The reversal of 30243840853 is 35804834203.

It can be written as a sum of positive squares in 4 ways, for example, as 1077349329 + 29166491524 = 32823^2 + 170782^2 .

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 30243840853 - 25 = 30243840821 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 (30243840863) 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 7 ways as a sum of consecutive naturals, for example, 510925 + ... + 567037.

It is an arithmetic number, because the mean of its divisors is an integer number (3805735651).

Almost surely, 230243840853 is an apocalyptic number.

It is an amenable number.

30243840853 is a deficient number, since it is larger than the sum of its proper divisors (202044355).

30243840853 is a wasteful number, since it uses less digits than its factorization.

30243840853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59703.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 30243840853 in words is "thirty billion, two hundred forty-three million, eight hundred forty thousand, eight hundred fifty-three".

Divisors: 1 157 3433 56113 538981 8809741 192635929 30243840853