20944227 has 4 divisors (see below), whose sum is σ = 27925640. Its totient is φ = 13962816.

The previous prime is 20944207. The next prime is 20944229. The reversal of 20944227 is 72244902.

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

It is not a de Polignac number, because 20944227 - 2¹⁰ = 20943203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20944194 and 20944203.

It is not an unprimeable number, because it can be changed into a prime (20944229) 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, 3490702 + ... + 3490707.

It is an arithmetic number, because the mean of its divisors is an integer number (6981410).

Almost surely, 2^20944227 is an apocalyptic number.

20944227 is a deficient number, since it is larger than the sum of its proper divisors (6981413).

20944227 is an equidigital number, since it uses as much as digits as its factorization.

20944227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6981412.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 20944227 is about 4576.4863159415. The cubic root of 20944227 is about 275.6479574771.

The spelling of 20944227 in words is "twenty million, nine hundred forty-four thousand, two hundred twenty-seven".