20730382 has 16 divisors (see below), whose sum is σ = 32256000. Its totient is φ = 9981720.

The previous prime is 20730373. The next prime is 20730407. The reversal of 20730382 is 28303702.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14119 + ... + 15517.

It is an arithmetic number, because the mean of its divisors is an integer number (2016000).

Almost surely, 2^20730382 is an apocalyptic number.

20730382 is a deficient number, since it is larger than the sum of its proper divisors (11525618).

20730382 is a wasteful number, since it uses less digits than its factorization.

20730382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 20730382 is about 4553.0629251088. The cubic root of 20730382 is about 274.7066049972.

It can be divided in two parts, 20730 and 382, that added together give a palindrome (21112).

The spelling of 20730382 in words is "twenty million, seven hundred thirty thousand, three hundred eighty-two".