20424446 has 16 divisors (see below), whose sum is σ = 37073376. Its totient is φ = 8238336.

The previous prime is 20424431. The next prime is 20424491. The reversal of 20424446 is 64442402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42671 + ... + 43146.

It is an arithmetic number, because the mean of its divisors is an integer number (2317086).

Almost surely, 2^20424446 is an apocalyptic number.

20424446 is a deficient number, since it is larger than the sum of its proper divisors (16648930).

20424446 is a wasteful number, since it uses less digits than its factorization.

20424446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85843.

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 20424446 is about 4519.3413236887. The cubic root of 20424446 is about 273.3485420184.

Adding to 20424446 its reverse (64442402), we get a palindrome (84866848).

The spelling of 20424446 in words is "twenty million, four hundred twenty-four thousand, four hundred forty-six".