Search a number
-
+
30471549419 = 85735556067
BaseRepresentation
bin11100011000001111…
…101111000111101011
32220122121121002120102
4130120033233013223
5444401204040134
621555355020015
72126053616333
oct343017570753
986577532512
1030471549419
1111a174390a3
125aa4a3a60b
132b47c9851c
141690d160c3
15bd522237e
hex7183ef1eb

30471549419 has 4 divisors (see below), whose sum is σ = 30507106344. Its totient is φ = 30435992496.

The previous prime is 30471549413. The next prime is 30471549509. The reversal of 30471549419 is 91494517403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-30471549419 is a prime.

It is a super-2 number, since 2×304715494192 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30471549413) 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, 17777177 + ... + 17778890.

It is an arithmetic number, because the mean of its divisors is an integer number (7626776586).

Almost surely, 230471549419 is an apocalyptic number.

30471549419 is a deficient number, since it is larger than the sum of its proper divisors (35556925).

30471549419 is an equidigital number, since it uses as much as digits as its factorization.

30471549419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35556924.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 30471549419 in words is "thirty billion, four hundred seventy-one million, five hundred forty-nine thousand, four hundred nineteen".

Divisors: 1 857 35556067 30471549419