32730013 has 4 divisors (see below), whose sum is σ = 33528348. Its totient is φ = 31931680.

The previous prime is 32730011. The next prime is 32730023. The reversal of 32730013 is 31003723.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3602404 + 29127609 = 1898^2 + 5397^2 .

It is a cyclic number.

It is not a de Polignac number, because 32730013 - 2¹ = 32730011 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32730011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399106 + ... + 399187.

It is an arithmetic number, because the mean of its divisors is an integer number (8382087).

Almost surely, 2^32730013 is an apocalyptic number.

It is an amenable number.

32730013 is a deficient number, since it is larger than the sum of its proper divisors (798335).

32730013 is an equidigital number, since it uses as much as digits as its factorization.

32730013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798334.

The product of its (nonzero) digits is 378, while the sum is 19.

The square root of 32730013 is about 5721.0150323173. The cubic root of 32730013 is about 319.8762965868.

Adding to 32730013 its reverse (31003723), we get a palindrome (63733736).

The spelling of 32730013 in words is "thirty-two million, seven hundred thirty thousand, thirteen".