20744443 has 2 divisors, whose sum is σ = 20744444. Its totient is φ = 20744442.

The previous prime is 20744419. The next prime is 20744467. The reversal of 20744443 is 34444702.

It is a balanced prime because it is at equal distance from previous prime (20744419) and next prime (20744467).

It is a cyclic number.

It is not a de Polignac number, because 20744443 - 2¹³ = 20736251 is a prime.

It is equal to p_1314829 and since 20744443 and 1314829 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20742443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10372221 + 10372222.

It is an arithmetic number, because the mean of its divisors is an integer number (10372222).

Almost surely, 2^20744443 is an apocalyptic number.

20744443 is a deficient number, since it is larger than the sum of its proper divisors (1).

20744443 is an equidigital number, since it uses as much as digits as its factorization.

20744443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 20744443 is about 4554.6067887360. The cubic root of 20744443 is about 274.7687002765.

The spelling of 20744443 in words is "twenty million, seven hundred forty-four thousand, four hundred forty-three".