20245424 has 20 divisors (see below), whose sum is σ = 39297336. Its totient is φ = 10104192.

The previous prime is 20245411. The next prime is 20245439. The reversal of 20245424 is 42454202.

It is a self number, because there is not a number n which added to its sum of digits gives 20245424.

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, 13412 + ... + 14844.

Almost surely, 2^20245424 is an apocalyptic number.

It is an amenable number.

20245424 is a deficient number, since it is larger than the sum of its proper divisors (19051912).

20245424 is a wasteful number, since it uses less digits than its factorization.

20245424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324 (or 2318 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 20245424 is about 4499.4915268283. The cubic root of 20245424 is about 272.5475561588.

Adding to 20245424 its reverse (42454202), we get a palindrome (62699626).

The spelling of 20245424 in words is "twenty million, two hundred forty-five thousand, four hundred twenty-four".