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30434355641 = 107892820869
BaseRepresentation
bin11100010110000001…
…110110100110111001
32220120000121110022002
4130112001312212321
5444312143340031
621551545510345
72125122516554
oct342601664671
986500543262
1030434355641
11119a8444938
125a944a23b5
132b40375081
141689dd369b
15bd1d26ccb
hex7160769b9

30434355641 has 4 divisors (see below), whose sum is σ = 30437187300. Its totient is φ = 30431523984.

The previous prime is 30434355599. The next prime is 30434355671. The reversal of 30434355641 is 14655343403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14655343403 = 31472753013.

It can be written as a sum of positive squares in 2 ways, for example, as 4891603600 + 25542752041 = 69940^2 + 159821^2 .

It is a cyclic number.

It is not a de Polignac number, because 30434355641 - 218 = 30434093497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30434355595 and 30434355604.

It is not an unprimeable number, because it can be changed into a prime (30434355671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399646 + ... + 1421223.

It is an arithmetic number, because the mean of its divisors is an integer number (7609296825).

Almost surely, 230434355641 is an apocalyptic number.

It is an amenable number.

30434355641 is a deficient number, since it is larger than the sum of its proper divisors (2831659).

30434355641 is a wasteful number, since it uses less digits than its factorization.

30434355641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2831658.

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 30434355641 in words is "thirty billion, four hundred thirty-four million, three hundred fifty-five thousand, six hundred forty-one".

Divisors: 1 10789 2820869 30434355641