20424335 has 8 divisors (see below), whose sum is σ = 25799280. Its totient is φ = 15479424.

The previous prime is 20424331. The next prime is 20424337. The reversal of 20424335 is 53342402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20424335 - 2² = 20424331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20424335.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20424331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107402 + ... + 107591.

It is an arithmetic number, because the mean of its divisors is an integer number (3224910).

Almost surely, 2^20424335 is an apocalyptic number.

20424335 is a deficient number, since it is larger than the sum of its proper divisors (5374945).

20424335 is a wasteful number, since it uses less digits than its factorization.

20424335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215017.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 20424335 is about 4519.3290431213. The cubic root of 20424335 is about 273.3480468317.

Adding to 20424335 its reverse (53342402), we get a palindrome (73766737).

The spelling of 20424335 in words is "twenty million, four hundred twenty-four thousand, three hundred thirty-five".