20644314 has 8 divisors (see below), whose sum is σ = 41288640. Its totient is φ = 6881436.

The previous prime is 20644303. The next prime is 20644319. The reversal of 20644314 is 41344602.

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

20644314 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20644319) 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, 1720354 + ... + 1720365.

It is an arithmetic number, because the mean of its divisors is an integer number (5161080).

Almost surely, 2^20644314 is an apocalyptic number.

20644314 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20644314 is a wasteful number, since it uses less digits than its factorization.

20644314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3440724.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20644314 is about 4543.6014349852. The cubic root of 20644314 is about 274.3259037867.

Adding to 20644314 its reverse (41344602), we get a palindrome (61988916).

The spelling of 20644314 in words is "twenty million, six hundred forty-four thousand, three hundred fourteen".