Search a number
-
+
47263081 = 1732291193
BaseRepresentation
bin1011010001001…
…0110101101001
310021221012202111
42310102311221
544044404311
64405002321
71112505145
oct264226551
9107835674
1047263081
11247514a8
12139b33a1
139a3a728
1463c4225
154238d21
hex2d12d69

47263081 has 8 divisors (see below), whose sum is σ = 47783880. Its totient is φ = 46745472.

The previous prime is 47263033. The next prime is 47263109. The reversal of 47263081 is 18036274.

47263081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 28987456 + 18275625 = 5384^2 + 4275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47263081 - 221 = 45165929 is a prime.

It is a super-2 number, since 2×472630812 = 4467597651225122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47263001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39021 + ... + 40213.

It is an arithmetic number, because the mean of its divisors is an integer number (5972985).

Almost surely, 247263081 is an apocalyptic number.

It is an amenable number.

47263081 is a deficient number, since it is larger than the sum of its proper divisors (520799).

47263081 is a wasteful number, since it uses less digits than its factorization.

47263081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 47263081 is about 6874.8149793285. The cubic root of 47263081 is about 361.5546985279.

The spelling of 47263081 in words is "forty-seven million, two hundred sixty-three thousand, eighty-one".

Divisors: 1 173 229 1193 39617 206389 273197 47263081