Search a number
-
+
30454473571 = 91933138709
BaseRepresentation
bin11100010111001110…
…100110001101100011
32220121102110112220121
4130113032212031203
5444332321123241
621553545021111
72125455516454
oct342716461543
986542415817
1030454473571
1111a08835825
125a9b184797
132b4459a082
14168c94d12b
15bd399cad1
hex7173a6363

30454473571 has 4 divisors (see below), whose sum is σ = 30487613200. Its totient is φ = 30421333944.

The previous prime is 30454473559. The next prime is 30454473611. The reversal of 30454473571 is 17537445403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17537445403 = 24172769483.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30454473571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30454473871) 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, 16568436 + ... + 16570273.

It is an arithmetic number, because the mean of its divisors is an integer number (7621903300).

Almost surely, 230454473571 is an apocalyptic number.

30454473571 is a deficient number, since it is larger than the sum of its proper divisors (33139629).

30454473571 is an equidigital number, since it uses as much as digits as its factorization.

30454473571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33139628.

The product of its (nonzero) digits is 705600, while the sum is 43.

The spelling of 30454473571 in words is "thirty billion, four hundred fifty-four million, four hundred seventy-three thousand, five hundred seventy-one".

Divisors: 1 919 33138709 30454473571