20434444 has 12 divisors (see below), whose sum is σ = 36993600. Its totient is φ = 9864848.

The previous prime is 20434411. The next prime is 20434457. The reversal of 20434444 is 44443402.

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 in 3 ways as a sum of consecutive naturals, for example, 87964 + ... + 88195.

It is an arithmetic number, because the mean of its divisors is an integer number (3082800).

Almost surely, 2^20434444 is an apocalyptic number.

It is an amenable number.

20434444 is a deficient number, since it is larger than the sum of its proper divisors (16559156).

20434444 is a wasteful number, since it uses less digits than its factorization.

20434444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176192 (or 176190 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 20434444 is about 4520.4473229980. The cubic root of 20434444 is about 273.3931371556.

Adding to 20434444 its reverse (44443402), we get a palindrome (64877846).

The spelling of 20434444 in words is "twenty million, four hundred thirty-four thousand, four hundred forty-four".