Search a number
-
+
30279075841 = 74325582263
BaseRepresentation
bin11100001100110001…
…100000100000000001
32220011012102102110101
4130030301200200001
5444002420411331
621524321402401
72121225620020
oct341461404001
986135372411
1030279075841
1111928826923
125a50499401
132b17147c31
1416735328b7
15bc33a3061
hex70cc60801

30279075841 has 4 divisors (see below), whose sum is σ = 34604658112. Its totient is φ = 25953493572.

The previous prime is 30279075833. The next prime is 30279075881. The reversal of 30279075841 is 14857097203.

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: 14857097203 = 131142853631.

It is a cyclic number.

It is not a de Polignac number, because 30279075841 - 23 = 30279075833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30279075791 and 30279075800.

It is not an unprimeable number, because it can be changed into a prime (30279075881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162791125 + ... + 2162791138.

It is an arithmetic number, because the mean of its divisors is an integer number (8651164528).

Almost surely, 230279075841 is an apocalyptic number.

It is an amenable number.

30279075841 is a deficient number, since it is larger than the sum of its proper divisors (4325582271).

30279075841 is an equidigital number, since it uses as much as digits as its factorization.

30279075841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4325582270.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 30279075841 in words is "thirty billion, two hundred seventy-nine million, seventy-five thousand, eight hundred forty-one".

Divisors: 1 7 4325582263 30279075841