20202606 has 12 divisors (see below), whose sum is σ = 43772352. Its totient is φ = 6734196.

The previous prime is 20202601. The next prime is 20202619. The reversal of 20202606 is 60620202.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1122367 = 20202606 / (2 + 0 + 2 + 0 + 2 + 6 + 0 + 6).

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202601) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 561166 + ... + 561201.

It is an arithmetic number, because the mean of its divisors is an integer number (3647696).

Almost surely, 2^20202606 is an apocalyptic number.

20202606 is an abundant number, since it is smaller than the sum of its proper divisors (23569746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20202606 is a wasteful number, since it uses less digits than its factorization.

20202606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122375 (or 1122372 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20202606 is about 4494.7309151939. The cubic root of 20202606 is about 272.3552793255.

Adding to 20202606 its reverse (60620202), we get a palindrome (80822808).

The spelling of 20202606 in words is "twenty million, two hundred two thousand, six hundred six".