20424566 has 8 divisors (see below), whose sum is σ = 30792960. Its totient is φ = 10160248.

The previous prime is 20424539. The next prime is 20424577. The reversal of 20424566 is 66542402.

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

It is a congruent number.

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, 25526 + ... + 26313.

It is an arithmetic number, because the mean of its divisors is an integer number (3849120).

Almost surely, 2^20424566 is an apocalyptic number.

20424566 is a deficient number, since it is larger than the sum of its proper divisors (10368394).

20424566 is a wasteful number, since it uses less digits than its factorization.

20424566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52038.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 20424566 is about 4519.3545999401. The cubic root of 20424566 is about 273.3490773534.

Adding to 20424566 its reverse (66542402), we get a palindrome (86966968).

The spelling of 20424566 in words is "twenty million, four hundred twenty-four thousand, five hundred sixty-six".