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30839200617 = 310279733539
BaseRepresentation
bin11100101110001010…
…001101101101101001
32221121020101201012110
4130232022031231221
51001124313404432
622100051032533
72141136610611
oct345612155551
987536351173
1030839200617
1112095a19965
125b87b9b749
132ba61c1a04
1416c7a99a41
15c07645dcc
hex72e28db69

30839200617 has 4 divisors (see below), whose sum is σ = 41118934160. Its totient is φ = 20559467076.

The previous prime is 30839200603. The next prime is 30839200621. The reversal of 30839200617 is 71600293803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71600293803 = 323866764601.

It is not a de Polignac number, because 30839200617 - 28 = 30839200361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30839200627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5139866767 + ... + 5139866772.

It is an arithmetic number, because the mean of its divisors is an integer number (10279733540).

Almost surely, 230839200617 is an apocalyptic number.

It is an amenable number.

30839200617 is a deficient number, since it is larger than the sum of its proper divisors (10279733543).

30839200617 is a wasteful number, since it uses less digits than its factorization.

30839200617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10279733542.

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 30839200617 in words is "thirty billion, eight hundred thirty-nine million, two hundred thousand, six hundred seventeen".

Divisors: 1 3 10279733539 30839200617