20118424 has 16 divisors (see below), whose sum is σ = 37776600. Its totient is φ = 10044672.

The previous prime is 20118421. The next prime is 20118433. The reversal of 20118424 is 42481102.

It is a junction number, because it is equal to n+sod(n) for n = 20118395 and 20118404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20118421) 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, 6079 + ... + 8785.

Almost surely, 2^20118424 is an apocalyptic number.

It is an amenable number.

20118424 is a deficient number, since it is larger than the sum of its proper divisors (17658176).

20118424 is a wasteful number, since it uses less digits than its factorization.

20118424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642 (or 3638 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 20118424 is about 4485.3566190438. The cubic root of 20118424 is about 271.9764613425.

Adding to 20118424 its reverse (42481102), we get a palindrome (62599526).

The spelling of 20118424 in words is "twenty million, one hundred eighteen thousand, four hundred twenty-four".