30730285 has 8 divisors (see below), whose sum is σ = 38148120. Its totient is φ = 23736384.

The previous prime is 30730283. The next prime is 30730309. The reversal of 30730285 is 58203703.

It can be written as a sum of positive squares in 4 ways, for example, as 8328996 + 22401289 = 2886^2 + 4733^2 .

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

It is not a de Polignac number, because 30730285 - 2¹ = 30730283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30730283) 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, 105822 + ... + 106111.

It is an arithmetic number, because the mean of its divisors is an integer number (4768515).

Almost surely, 2^30730285 is an apocalyptic number.

It is an amenable number.

30730285 is a deficient number, since it is larger than the sum of its proper divisors (7417835).

30730285 is a wasteful number, since it uses less digits than its factorization.

30730285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211967.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 30730285 is about 5543.4903265001. The cubic root of 30730285 is about 313.2243591416.

Adding to 30730285 its reverse (58203703), we get a palindrome (88933988).

The spelling of 30730285 in words is "thirty million, seven hundred thirty thousand, two hundred eighty-five".