20730326 has 4 divisors (see below), whose sum is σ = 31095492. Its totient is φ = 10365162.

The previous prime is 20730313. The next prime is 20730373. The reversal of 20730326 is 62303702.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5182580 + ... + 5182583.

It is an arithmetic number, because the mean of its divisors is an integer number (7773873).

Almost surely, 2^20730326 is an apocalyptic number.

20730326 is a deficient number, since it is larger than the sum of its proper divisors (10365166).

20730326 is a wasteful number, since it uses less digits than its factorization.

20730326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10365165.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 20730326 is about 4553.0567753983. The cubic root of 20730326 is about 274.7063576375.

The spelling of 20730326 in words is "twenty million, seven hundred thirty thousand, three hundred twenty-six".