20703206 has 8 divisors (see below), whose sum is σ = 31356624. Its totient is φ = 10251000.

The previous prime is 20703191. The next prime is 20703211. The reversal of 20703206 is 60230702.

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

It is a congruent number.

It is an unprimeable number.

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, 50045 + ... + 50456.

It is an arithmetic number, because the mean of its divisors is an integer number (3919578).

Almost surely, 2^20703206 is an apocalyptic number.

20703206 is a deficient number, since it is larger than the sum of its proper divisors (10653418).

20703206 is a wasteful number, since it uses less digits than its factorization.

20703206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100606.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20703206 is about 4550.0775817562. The cubic root of 20703206 is about 274.5865124798.

Adding to 20703206 its reverse (60230702), we get a palindrome (80933908).

The spelling of 20703206 in words is "twenty million, seven hundred three thousand, two hundred six".