20006626 has 8 divisors (see below), whose sum is σ = 30113244. Its totient is φ = 9968880.

The previous prime is 20006621. The next prime is 20006641. The reversal of 20006626 is 62660002.

It can be written as a sum of positive squares in 2 ways, for example, as 18481401 + 1525225 = 4299^2 + 1235^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20006597 and 20006606.

It is not an unprimeable number, because it can be changed into a prime (20006621) 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 3 ways as a sum of consecutive naturals, for example, 16485 + ... + 17656.

Almost surely, 2^20006626 is an apocalyptic number.

20006626 is a deficient number, since it is larger than the sum of its proper divisors (10106618).

20006626 is a wasteful number, since it uses less digits than its factorization.

20006626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34436.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20006626 is about 4472.8767029732. The cubic root of 20006626 is about 271.4717345683.

Adding to 20006626 its reverse (62660002), we get a palindrome (82666628).

The spelling of 20006626 in words is "twenty million, six thousand, six hundred twenty-six".