Search a number
-
+
30405500269 is a prime number
BaseRepresentation
bin11100010100010011…
…110001110101101101
32220111000022110011121
4130110103301311231
5444232302002034
621545035220541
72124322326244
oct342423616555
986430273147
1030405500269
1111993126421
125a868a7751
132b373b10a1
14168624195b
15bce5271b4
hex7144f1d6d

30405500269 has 2 divisors, whose sum is σ = 30405500270. Its totient is φ = 30405500268.

The previous prime is 30405500231. The next prime is 30405500287. The reversal of 30405500269 is 96200550403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28481625225 + 1923875044 = 168765^2 + 43862^2 .

It is a cyclic number.

It is not a de Polignac number, because 30405500269 - 215 = 30405467501 is a prime.

It is a super-2 number, since 2×304055002692 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30405507269) 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 as a sum of consecutive naturals, namely, 15202750134 + 15202750135.

It is an arithmetic number, because the mean of its divisors is an integer number (15202750135).

Almost surely, 230405500269 is an apocalyptic number.

It is an amenable number.

30405500269 is a deficient number, since it is larger than the sum of its proper divisors (1).

30405500269 is an equidigital number, since it uses as much as digits as its factorization.

30405500269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 30405500269 in words is "thirty billion, four hundred five million, five hundred thousand, two hundred sixty-nine".