20424448 has 36 divisors (see below), whose sum is σ = 44481528. Its totient is φ = 9282560.

The previous prime is 20424431. The next prime is 20424491. The reversal of 20424448 is 84442402.

It is a super-2 number, since 2×20424448² = 834316152209408, which contains 22 as substring.

It is a congruent number.

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, 811 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (1235598).

Almost surely, 2^20424448 is an apocalyptic number.

It is an amenable number.

20424448 is an abundant number, since it is smaller than the sum of its proper divisors (24057080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20424448 is an equidigital number, since it uses as much as digits as its factorization.

20424448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7280 (or 7266 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 20424448 is about 4519.3415449598. The cubic root of 20424448 is about 273.3485509407.

The spelling of 20424448 in words is "twenty million, four hundred twenty-four thousand, four hundred forty-eight".