20033444 has 12 divisors (see below), whose sum is σ = 35166768. Its totient is φ = 9985800.

The previous prime is 20033441. The next prime is 20033459. The reversal of 20033444 is 44433002.

It is a happy number.

It is a super-2 number, since 2×20033444² = 802677757002272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20033441) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 6242 + ... + 8889.

It is an arithmetic number, because the mean of its divisors is an integer number (2930564).

Almost surely, 2^20033444 is an apocalyptic number.

It is an amenable number.

20033444 is a deficient number, since it is larger than the sum of its proper divisors (15133324).

20033444 is a wasteful number, since it uses less digits than its factorization.

20033444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15466 (or 15464 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 20033444 is about 4475.8735460243. The cubic root of 20033444 is about 271.5929790402.

Adding to 20033444 its reverse (44433002), we get a palindrome (64466446).

The spelling of 20033444 in words is "twenty million, thirty-three thousand, four hundred forty-four".