20044427 has 8 divisors (see below), whose sum is σ = 21621264. Its totient is φ = 18472608.

The previous prime is 20044397. The next prime is 20044447. The reversal of 20044427 is 72444002.

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 20044427 - 2¹⁰ = 20043403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20044447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13913 + ... + 15285.

It is an arithmetic number, because the mean of its divisors is an integer number (2702658).

Almost surely, 2^20044427 is an apocalyptic number.

20044427 is a deficient number, since it is larger than the sum of its proper divisors (1576837).

20044427 is a wasteful number, since it uses less digits than its factorization.

20044427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2509.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 20044427 is about 4477.1002892497. The cubic root of 20044427 is about 271.6426020730.

Adding to 20044427 its reverse (72444002), we get a palindrome (92488429).

The spelling of 20044427 in words is "twenty million, forty-four thousand, four hundred twenty-seven".