20144593 has 8 divisors (see below), whose sum is σ = 23120640. Its totient is φ = 17193120.

The previous prime is 20144591. The next prime is 20144599. The reversal of 20144593 is 39544102.

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

It is not a de Polignac number, because 20144593 - 2¹ = 20144591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4348 + ... + 7693.

It is an arithmetic number, because the mean of its divisors is an integer number (2890080).

Almost surely, 2^20144593 is an apocalyptic number.

It is an amenable number.

20144593 is a deficient number, since it is larger than the sum of its proper divisors (2976047).

20144593 is a wasteful number, since it uses less digits than its factorization.

20144593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12287.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20144593 is about 4488.2728303881. The cubic root of 20144593 is about 272.0943345299.

Adding to 20144593 its reverse (39544102), we get a palindrome (59688695).

The spelling of 20144593 in words is "twenty million, one hundred forty-four thousand, five hundred ninety-three".