20426066 has 16 divisors (see below), whose sum is σ = 31164000. Its totient is φ = 10039680.

The previous prime is 20426039. The next prime is 20426069. The reversal of 20426066 is 66062402.

It is not an unprimeable number, because it can be changed into a prime (20426069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40685 + ... + 41183.

It is an arithmetic number, because the mean of its divisors is an integer number (1947750).

Almost surely, 2^20426066 is an apocalyptic number.

20426066 is a deficient number, since it is larger than the sum of its proper divisors (10737934).

20426066 is a wasteful number, since it uses less digits than its factorization.

20426066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20426066 is about 4519.5205497929. The cubic root of 20426066 is about 273.3557688637.

Adding to 20426066 its reverse (66062402), we get a palindrome (86488468).

The spelling of 20426066 in words is "twenty million, four hundred twenty-six thousand, sixty-six".