20944027 has 4 divisors (see below), whose sum is σ = 22555120. Its totient is φ = 19332936.

The previous prime is 20944019. The next prime is 20944043. The reversal of 20944027 is 72044902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72044902 = 2 ⋅36022451.

It is a cyclic number.

It is not a de Polignac number, because 20944027 - 2³ = 20944019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20943986 and 20944004.

It is not an unprimeable number, because it can be changed into a prime (20944057) 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, 805527 + ... + 805552.

It is an arithmetic number, because the mean of its divisors is an integer number (5638780).

Almost surely, 2^20944027 is an apocalyptic number.

20944027 is a deficient number, since it is larger than the sum of its proper divisors (1611093).

20944027 is a wasteful number, since it uses less digits than its factorization.

20944027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611092.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 20944027 is about 4576.4644650647. The cubic root of 20944027 is about 275.6470800712.

Adding to 20944027 its reverse (72044902), we get a palindrome (92988929).

The spelling of 20944027 in words is "twenty million, nine hundred forty-four thousand, twenty-seven".