20336423 has 4 divisors (see below), whose sum is σ = 20533968. Its totient is φ = 20138880.

The previous prime is 20336419. The next prime is 20336429. The reversal of 20336423 is 32463302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20336423 - 2² = 20336419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336429) 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, 98618 + ... + 98823.

It is an arithmetic number, because the mean of its divisors is an integer number (5133492).

Almost surely, 2^20336423 is an apocalyptic number.

20336423 is a deficient number, since it is larger than the sum of its proper divisors (197545).

20336423 is a wasteful number, since it uses less digits than its factorization.

20336423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197544.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 20336423 is about 4509.5923319076. The cubic root of 20336423 is about 272.9552941952.

Adding to 20336423 its reverse (32463302), we get a palindrome (52799725).

The spelling of 20336423 in words is "twenty million, three hundred thirty-six thousand, four hundred twenty-three".