20385718 has 8 divisors (see below), whose sum is σ = 30701160. Its totient is φ = 10152000.

The previous prime is 20385697. The next prime is 20385719. The reversal of 20385718 is 81758302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385719) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19803 + ... + 20806.

It is an arithmetic number, because the mean of its divisors is an integer number (3837645).

Almost surely, 2^20385718 is an apocalyptic number.

20385718 is a deficient number, since it is larger than the sum of its proper divisors (10315442).

20385718 is a wasteful number, since it uses less digits than its factorization.

20385718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40862.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 20385718 is about 4515.0545954617. The cubic root of 20385718 is about 273.1756619240.

The spelling of 20385718 in words is "twenty million, three hundred eighty-five thousand, seven hundred eighteen".