20944337 has 4 divisors (see below), whose sum is σ = 21160356. Its totient is φ = 20728320.

The previous prime is 20944309. The next prime is 20944367. The reversal of 20944337 is 73344902.

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

It can be written as a sum of positive squares in 2 ways, for example, as 16613776 + 4330561 = 4076^2 + 2081^2 .

It is a cyclic number.

It is not a de Polignac number, because 20944337 - 2²⁰ = 19895761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20944307) 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, 107864 + ... + 108057.

It is an arithmetic number, because the mean of its divisors is an integer number (5290089).

Almost surely, 2^20944337 is an apocalyptic number.

It is an amenable number.

20944337 is a deficient number, since it is larger than the sum of its proper divisors (216019).

20944337 is an equidigital number, since it uses as much as digits as its factorization.

20944337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216018.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 20944337 is about 4576.4983338793. The cubic root of 20944337 is about 275.6484400480.

The spelling of 20944337 in words is "twenty million, nine hundred forty-four thousand, three hundred thirty-seven".