20366445 has 16 divisors (see below), whose sum is σ = 35548992. Its totient is φ = 9874560.

The previous prime is 20366443. The next prime is 20366449. The reversal of 20366445 is 54466302.

It is not a de Polignac number, because 20366445 - 2¹ = 20366443 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20366443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61552 + ... + 61881.

It is an arithmetic number, because the mean of its divisors is an integer number (2221812).

Almost surely, 2^20366445 is an apocalyptic number.

It is an amenable number.

20366445 is a deficient number, since it is larger than the sum of its proper divisors (15182547).

20366445 is a wasteful number, since it uses less digits than its factorization.

20366445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123452.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 20366445 is about 4512.9197865683. The cubic root of 20366445 is about 273.0895464945.

The spelling of 20366445 in words is "twenty million, three hundred sixty-six thousand, four hundred forty-five".