Search a number
-
+
30568013093 = 291054069417
BaseRepresentation
bin11100011101111111…
…101101110100100101
32220220100002221212002
4130131333231310211
51000100402404333
622013122335045
72131334552462
oct343577556445
986810087762
1030568013093
1111a66934742
125b111ba485
132b61c71517
14169da66669
15bdd9290e8
hex71dfedd25

30568013093 has 4 divisors (see below), whose sum is σ = 31622082540. Its totient is φ = 29513943648.

The previous prime is 30568013087. The next prime is 30568013213. The reversal of 30568013093 is 39031086503.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15819853729 + 14748159364 = 125777^2 + 121442^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30568013093 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 (30568013033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 527034680 + ... + 527034737.

It is an arithmetic number, because the mean of its divisors is an integer number (7905520635).

Almost surely, 230568013093 is an apocalyptic number.

It is an amenable number.

30568013093 is a deficient number, since it is larger than the sum of its proper divisors (1054069447).

30568013093 is a wasteful number, since it uses less digits than its factorization.

30568013093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054069446.

The product of its (nonzero) digits is 58320, while the sum is 38.

Adding to 30568013093 its reverse (39031086503), we get a palindrome (69599099596).

The spelling of 30568013093 in words is "thirty billion, five hundred sixty-eight million, thirteen thousand, ninety-three".

Divisors: 1 29 1054069417 30568013093