20093786 has 4 divisors (see below), whose sum is σ = 30140682. Its totient is φ = 10046892.

The previous prime is 20093783. The next prime is 20093791. The reversal of 20093786 is 68739002.

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

It can be written as a sum of positive squares in only one way, i.e., 13432225 + 6661561 = 3665^2 + 2581^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20093783) by changing a digit.

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 as a sum of consecutive naturals, namely, 5023445 + ... + 5023448.

Almost surely, 2^20093786 is an apocalyptic number.

20093786 is a deficient number, since it is larger than the sum of its proper divisors (10046896).

20093786 is a wasteful number, since it uses less digits than its factorization.

20093786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046895.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 20093786 is about 4482.6092847805. The cubic root of 20093786 is about 271.8653907909.

The spelling of 20093786 in words is "twenty million, ninety-three thousand, seven hundred eighty-six".