20126194 has 8 divisors (see below), whose sum is σ = 32933808. Its totient is φ = 9148260.

The previous prime is 20126189. The next prime is 20126201. The reversal of 20126194 is 49162102.

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 457392 + ... + 457435.

It is an arithmetic number, because the mean of its divisors is an integer number (4116726).

Almost surely, 2^20126194 is an apocalyptic number.

20126194 is a deficient number, since it is larger than the sum of its proper divisors (12807614).

20126194 is a wasteful number, since it uses less digits than its factorization.

20126194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914840.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 20126194 is about 4486.2226872950. Note that the first 3 decimals coincide. The cubic root of 20126194 is about 272.0114704649.

Adding to 20126194 its reverse (49162102), we get a palindrome (69288296).

The spelling of 20126194 in words is "twenty million, one hundred twenty-six thousand, one hundred ninety-four".