20001424 has 20 divisors (see below), whose sum is σ = 38930544. Its totient is φ = 9954848.

The previous prime is 20001389. The next prime is 20001439. The reversal of 20001424 is 42410002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879 + ... + 6385.

Almost surely, 2^20001424 is an apocalyptic number.

It is an amenable number.

20001424 is a deficient number, since it is larger than the sum of its proper divisors (18929120).

20001424 is a wasteful number, since it uses less digits than its factorization.

20001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5742 (or 5736 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 20001424 is about 4472.2951602058. The cubic root of 20001424 is about 271.4482037244.

Adding to 20001424 its reverse (42410002), we get a palindrome (62411426).

The spelling of 20001424 in words is "twenty million, one thousand, four hundred twenty-four".