30005473 has 8 divisors (see below), whose sum is σ = 31076136. Its totient is φ = 28953600.

The previous prime is 30005447. The next prime is 30005477. The reversal of 30005473 is 37450003.

It can be written as a sum of positive squares in 4 ways, for example, as 5234944 + 24770529 = 2288^2 + 4977^2 .

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 30005473 - 2⁵ = 30005441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30005477) 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, 1408 + ... + 7873.

It is an arithmetic number, because the mean of its divisors is an integer number (3884517).

Almost surely, 2^30005473 is an apocalyptic number.

It is an amenable number.

30005473 is a deficient number, since it is larger than the sum of its proper divisors (1070663).

30005473 is an equidigital number, since it uses as much as digits as its factorization.

30005473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9395.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 30005473 is about 5477.7251665267. The cubic root of 30005473 is about 310.7421448726.

Adding to 30005473 its reverse (37450003), we get a palindrome (67455476).

The spelling of 30005473 in words is "thirty million, five thousand, four hundred seventy-three".