20055424 has 16 divisors (see below), whose sum is σ = 39954420. Its totient is φ = 10027648.

The previous prime is 20055407. The next prime is 20055433. The reversal of 20055424 is 42455002.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 20055395 and 20055404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78214 + ... + 78469.

Almost surely, 2^20055424 is an apocalyptic number.

It is an amenable number.

20055424 is a deficient number, since it is larger than the sum of its proper divisors (19898996).

20055424 is an equidigital number, since it uses as much as digits as its factorization.

20055424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156697 (or 156685 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 20055424 is about 4478.3282595183. The cubic root of 20055424 is about 271.6922702020.

The spelling of 20055424 in words is "twenty million, fifty-five thousand, four hundred twenty-four".