20744055 has 12 divisors (see below), whose sum is σ = 35956440. Its totient is φ = 11063472.

The previous prime is 20744051. The next prime is 20744081. The reversal of 20744055 is 55044702.

It is not a de Polignac number, because 20744055 - 2² = 20744051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20744051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 230445 + ... + 230534.

It is an arithmetic number, because the mean of its divisors is an integer number (2996370).

Almost surely, 2^20744055 is an apocalyptic number.

20744055 is a deficient number, since it is larger than the sum of its proper divisors (15212385).

20744055 is a wasteful number, since it uses less digits than its factorization.

20744055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460990 (or 460987 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20744055 is about 4554.5641943000. The cubic root of 20744055 is about 274.7669871925.

Adding to 20744055 its reverse (55044702), we get a palindrome (75788757).

The spelling of 20744055 in words is "twenty million, seven hundred forty-four thousand, fifty-five".