Search a number
-
+
30175075789 = 151199834939
BaseRepresentation
bin11100000110100100…
…110001110111001101
32212212221201200012121
4130012210301313031
5443244304411124
621510124332541
72115523624615
oct340644616715
985787650177
1030175075789
1111885053071
125a216a4151
132acb733841
1416637bda45
15bb91ad2e4
hex706931dcd

30175075789 has 4 divisors (see below), whose sum is σ = 30374910880. Its totient is φ = 29975240700.

The previous prime is 30175075787. The next prime is 30175075829. The reversal of 30175075789 is 98757057103.

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.

It is a cyclic number.

It is not a de Polignac number, because 30175075789 - 21 = 30175075787 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 (30175075787) 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, 99917319 + ... + 99917620.

It is an arithmetic number, because the mean of its divisors is an integer number (7593727720).

Almost surely, 230175075789 is an apocalyptic number.

It is an amenable number.

30175075789 is a deficient number, since it is larger than the sum of its proper divisors (199835091).

30175075789 is a wasteful number, since it uses less digits than its factorization.

30175075789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199835090.

The product of its (nonzero) digits is 1852200, while the sum is 52.

The spelling of 30175075789 in words is "thirty billion, one hundred seventy-five million, seventy-five thousand, seven hundred eighty-nine".

Divisors: 1 151 199834939 30175075789