20066444 has 6 divisors (see below), whose sum is σ = 35116284. Its totient is φ = 10033220.

The previous prime is 20066429. The next prime is 20066447. The reversal of 20066444 is 44466002.

It is not an unprimeable number, because it can be changed into a prime (20066447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2508302 + ... + 2508309.

It is an arithmetic number, because the mean of its divisors is an integer number (5852714).

Almost surely, 2^20066444 is an apocalyptic number.

It is an amenable number.

20066444 is a deficient number, since it is larger than the sum of its proper divisors (15049840).

20066444 is a wasteful number, since it uses less digits than its factorization.

20066444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016615 (or 5016613 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20066444 is about 4479.5584603842. The cubic root of 20066444 is about 271.7420240009.

The spelling of 20066444 in words is "twenty million, sixty-six thousand, four hundred forty-four".