20444210 has 8 divisors (see below), whose sum is σ = 36799596. Its totient is φ = 8177680.

The previous prime is 20444191. The next prime is 20444213. The reversal of 20444210 is 1244402.

It can be written as a sum of positive squares in 2 ways, for example, as 20097289 + 346921 = 4483^2 + 589^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20444213) 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, 1022201 + ... + 1022220.

Almost surely, 2^20444210 is an apocalyptic number.

20444210 is a deficient number, since it is larger than the sum of its proper divisors (16355386).

20444210 is a wasteful number, since it uses less digits than its factorization.

20444210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044428.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 20444210 is about 4521.5273967986. The cubic root of 20444210 is about 273.4366834370.

Adding to 20444210 its reverse (1244402), we get a palindrome (21688612).

The spelling of 20444210 in words is "twenty million, four hundred forty-four thousand, two hundred ten".