20212606 has 8 divisors (see below), whose sum is σ = 30338784. Its totient is φ = 10099680.

The previous prime is 20212603. The next prime is 20212639. The reversal of 20212606 is 60621202.

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

It is a super-2 number, since 2×20212606² = 817098882622472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212603) 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, 2646 + ... + 6886.

It is an arithmetic number, because the mean of its divisors is an integer number (3792348).

Almost surely, 2^20212606 is an apocalyptic number.

20212606 is a deficient number, since it is larger than the sum of its proper divisors (10126178).

20212606 is a wasteful number, since it uses less digits than its factorization.

20212606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6626.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20212606 is about 4495.8431912156. The cubic root of 20212606 is about 272.4002092312.

Adding to 20212606 its reverse (60621202), we get a palindrome (80833808).

The spelling of 20212606 in words is "twenty million, two hundred twelve thousand, six hundred six".