20030206 has 8 divisors (see below), whose sum is σ = 34337520. Its totient is φ = 8584368.

The previous prime is 20030203. The next prime is 20030207. The reversal of 20030206 is 60203002.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20030203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715351 + ... + 715378.

It is an arithmetic number, because the mean of its divisors is an integer number (4292190).

Almost surely, 2^20030206 is an apocalyptic number.

20030206 is a deficient number, since it is larger than the sum of its proper divisors (14307314).

20030206 is a wasteful number, since it uses less digits than its factorization.

20030206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430738.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 20030206 is about 4475.5118143068. The cubic root of 20030206 is about 271.5783457524.

Adding to 20030206 its reverse (60203002), we get a palindrome (80233208).

The spelling of 20030206 in words is "twenty million, thirty thousand, two hundred six".