20004266 has 4 divisors (see below), whose sum is σ = 30006402. Its totient is φ = 10002132.

The previous prime is 20004253. The next prime is 20004289. The reversal of 20004266 is 66240002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13476241 + 6528025 = 3671^2 + 2555^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001065 + ... + 5001068.

Almost surely, 2^20004266 is an apocalyptic number.

20004266 is a deficient number, since it is larger than the sum of its proper divisors (10002136).

20004266 is a wasteful number, since it uses less digits than its factorization.

20004266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10002135.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20004266 is about 4472.6128828684. The cubic root of 20004266 is about 271.4610597967.

Adding to 20004266 its reverse (66240002), we get a palindrome (86244268).

The spelling of 20004266 in words is "twenty million, four thousand, two hundred sixty-six".