20023427 has 8 divisors (see below), whose sum is σ = 21383040. Its totient is φ = 18708480.

The previous prime is 20023417. The next prime is 20023429. The reversal of 20023427 is 72432002.

It is a happy number.

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

It is not a de Polignac number, because 20023427 - 2⁴ = 20023411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023399 and 20023408.

It is not an unprimeable number, because it can be changed into a prime (20023429) 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, 10238 + ... + 12035.

It is an arithmetic number, because the mean of its divisors is an integer number (2672880).

Almost surely, 2^20023427 is an apocalyptic number.

20023427 is a deficient number, since it is larger than the sum of its proper divisors (1359613).

20023427 is a wasteful number, since it uses less digits than its factorization.

20023427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22333.

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20023427 is about 4474.7544066686. The cubic root of 20023427 is about 271.5477047406.

Adding to 20023427 its reverse (72432002), we get a palindrome (92455429).

The spelling of 20023427 in words is "twenty million, twenty-three thousand, four hundred twenty-seven".