20386593 has 16 divisors (see below), whose sum is σ = 31020160. Its totient is φ = 13223088.

The previous prime is 20386571. The next prime is 20386631. The reversal of 20386593 is 39568302.

It is not a de Polignac number, because 20386593 - 2⁶ = 20386529 is a prime.

It is a super-2 number, since 2×20386593² = 831226348295298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20386523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9205 + ... + 11202.

It is an arithmetic number, because the mean of its divisors is an integer number (1938760).

Almost surely, 2^20386593 is an apocalyptic number.

It is an amenable number.

20386593 is a deficient number, since it is larger than the sum of its proper divisors (10633567).

20386593 is a wasteful number, since it uses less digits than its factorization.

20386593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20453 (or 20447 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 20386593 is about 4515.1514924751. The cubic root of 20386593 is about 273.1795703022.

The spelling of 20386593 in words is "twenty million, three hundred eighty-six thousand, five hundred ninety-three".