20593445 has 8 divisors (see below), whose sum is σ = 24736536. Its totient is φ = 16458496.

The previous prime is 20593427. The next prime is 20593453. The reversal of 20593445 is 54439502.

It is a happy number.

It is a Cunningham number, because it is equal to 4538²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1522756 + 19070689 = 1234^2 + 4367^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20593445 - 2¹⁶ = 20527909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8489 + ... + 10641.

It is an arithmetic number, because the mean of its divisors is an integer number (3092067).

Almost surely, 2^20593445 is an apocalyptic number.

It is an amenable number.

20593445 is a deficient number, since it is larger than the sum of its proper divisors (4143091).

20593445 is a wasteful number, since it uses less digits than its factorization.

20593445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 20593445 is about 4538.0001101807. Note that the first 3 decimals coincide. The cubic root of 20593445 is about 274.1003992098.

The spelling of 20593445 in words is "twenty million, five hundred ninety-three thousand, four hundred forty-five".