20338424 has 16 divisors (see below), whose sum is σ = 38215320. Its totient is φ = 10147680.

The previous prime is 20338393. The next prime is 20338433. The reversal of 20338424 is 42483302.

It is a junction number, because it is equal to n+sod(n) for n = 20338393 and 20338402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754 + ... + 6614.

Almost surely, 2^20338424 is an apocalyptic number.

It is an amenable number.

20338424 is a deficient number, since it is larger than the sum of its proper divisors (17876896).

20338424 is a wasteful number, since it uses less digits than its factorization.

20338424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5390 (or 5386 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 20338424 is about 4509.8141868596. The cubic root of 20338424 is about 272.9642463699.

The spelling of 20338424 in words is "twenty million, three hundred thirty-eight thousand, four hundred twenty-four".