20730082 has 4 divisors (see below), whose sum is σ = 31095126. Its totient is φ = 10365040.

The previous prime is 20730079. The next prime is 20730109. The reversal of 20730082 is 28003702.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 20169081 + 561001 = 4491^2 + 749^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 as a sum of consecutive naturals, namely, 5182519 + ... + 5182522.

Almost surely, 2^20730082 is an apocalyptic number.

20730082 is a deficient number, since it is larger than the sum of its proper divisors (10365044).

20730082 is a wasteful number, since it uses less digits than its factorization.

20730082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10365043.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 20730082 is about 4553.0299801341. The cubic root of 20730082 is about 274.7052798507.

Adding to 20730082 its reverse (28003702), we get a palindrome (48733784).

The spelling of 20730082 in words is "twenty million, seven hundred thirty thousand, eighty-two".