20444371 has 2 divisors, whose sum is σ = 20444372. Its totient is φ = 20444370.

The previous prime is 20444357. The next prime is 20444381. The reversal of 20444371 is 17344402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20444371 - 2¹³ = 20436179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20444341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222185 + 10222186.

It is an arithmetic number, because the mean of its divisors is an integer number (10222186).

Almost surely, 2^20444371 is an apocalyptic number.

20444371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444371 is an equidigital number, since it uses as much as digits as its factorization.

20444371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20444371 is about 4521.5452004818. The cubic root of 20444371 is about 273.4374012147.

Adding to 20444371 its reverse (17344402), we get a palindrome (37788773).

The spelling of 20444371 in words is "twenty million, four hundred forty-four thousand, three hundred seventy-one".