20226666 has 8 divisors (see below), whose sum is σ = 40453344. Its totient is φ = 6742220.

The previous prime is 20226649. The next prime is 20226673. The reversal of 20226666 is 66662202.

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

20226666 is an admirable number.

20226666 is a modest number, since divided by 6666 gives 2022 as remainder.

It is an unprimeable number.

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, 1685550 + ... + 1685561.

It is an arithmetic number, because the mean of its divisors is an integer number (5056668).

Almost surely, 2^20226666 is an apocalyptic number.

20226666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20226666 is a wasteful number, since it uses less digits than its factorization.

20226666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371116.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 20226666 is about 4497.4065860227. The cubic root of 20226666 is about 272.4633556201.

Adding to 20226666 its reverse (66662202), we get a palindrome (86888868).

The spelling of 20226666 in words is "twenty million, two hundred twenty-six thousand, six hundred sixty-six".