20014191 has 24 divisors (see below), whose sum is σ = 30060576. Its totient is φ = 12821760.

The previous prime is 20014187. The next prime is 20014199. The reversal of 20014191 is 19141002.

It is not a de Polignac number, because 20014191 - 2² = 20014187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20014199) 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 in 23 ways as a sum of consecutive naturals, for example, 26566 + ... + 27308.

It is an arithmetic number, because the mean of its divisors is an integer number (1252524).

Almost surely, 2^20014191 is an apocalyptic number.

20014191 is a deficient number, since it is larger than the sum of its proper divisors (10046385).

20014191 is a wasteful number, since it uses less digits than its factorization.

20014191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 20014191 is about 4473.7222756895. The cubic root of 20014191 is about 271.5059469816.

Adding to 20014191 its reverse (19141002), we get a palindrome (39155193).

The spelling of 20014191 in words is "twenty million, fourteen thousand, one hundred ninety-one".