20386118 has 4 divisors (see below), whose sum is σ = 30579180. Its totient is φ = 10193058.

The previous prime is 20386117. The next prime is 20386123. The reversal of 20386118 is 81168302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20386117) 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 as a sum of consecutive naturals, namely, 5096528 + ... + 5096531.

It is an arithmetic number, because the mean of its divisors is an integer number (7644795).

Almost surely, 2^20386118 is an apocalyptic number.

20386118 is a deficient number, since it is larger than the sum of its proper divisors (10193062).

20386118 is a wasteful number, since it uses less digits than its factorization.

20386118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10193061.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 20386118 is about 4515.0988914973. The cubic root of 20386118 is about 273.1774486250.

The spelling of 20386118 in words is "twenty million, three hundred eighty-six thousand, one hundred eighteen".