20450426 has 8 divisors (see below), whose sum is σ = 30741120. Its totient is φ = 10203388.

The previous prime is 20450411. The next prime is 20450467. The reversal of 20450426 is 62405402.

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

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, 9716 + ... + 11631.

It is an arithmetic number, because the mean of its divisors is an integer number (3842640).

Almost surely, 2^20450426 is an apocalyptic number.

20450426 is a deficient number, since it is larger than the sum of its proper divisors (10290694).

20450426 is a wasteful number, since it uses less digits than its factorization.

20450426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21828.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20450426 is about 4522.2147228985. The cubic root of 20450426 is about 273.4643931601.

Adding to 20450426 its reverse (62405402), we get a palindrome (82855828).

The spelling of 20450426 in words is "twenty million, four hundred fifty thousand, four hundred twenty-six".