20271424 has 28 divisors (see below), whose sum is σ = 40379904. Its totient is φ = 10097024.

The previous prime is 20271421. The next prime is 20271451. The reversal of 20271424 is 42417202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20271395 and 20271404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20271421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24099 + ... + 24925.

Almost surely, 2^20271424 is an apocalyptic number.

It is an amenable number.

20271424 is a deficient number, since it is larger than the sum of its proper divisors (20108480).

20271424 is an equidigital number, since it uses as much as digits as its factorization.

20271424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 20271424 is about 4502.3798151644. The cubic root of 20271424 is about 272.6641784820.

Adding to 20271424 its reverse (42417202), we get a palindrome (62688626).

The spelling of 20271424 in words is "twenty million, two hundred seventy-one thousand, four hundred twenty-four".