20330738 has 8 divisors (see below), whose sum is σ = 30578988. Its totient is φ = 10137744.

The previous prime is 20330731. The next prime is 20330753. The reversal of 20330738 is 83703302.

It can be written as a sum of positive squares in 2 ways, for example, as 20313049 + 17689 = 4507^2 + 133^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20330731) 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 3 ways as a sum of consecutive naturals, for example, 12881 + ... + 14372.

Almost surely, 2^20330738 is an apocalyptic number.

20330738 is a deficient number, since it is larger than the sum of its proper divisors (10248250).

20330738 is a wasteful number, since it uses less digits than its factorization.

20330738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27628.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 20330738 is about 4508.9619647985. The cubic root of 20330738 is about 272.9298571511.

The spelling of 20330738 in words is "twenty million, three hundred thirty thousand, seven hundred thirty-eight".