20026199 has 4 divisors (see below), whose sum is σ = 20203536. Its totient is φ = 19848864.

The previous prime is 20026177. The next prime is 20026207. The reversal of 20026199 is 99162002.

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

It is a cyclic number.

It is not a de Polignac number, because 20026199 - 2¹² = 20022103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026129) 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 3 ways as a sum of consecutive naturals, for example, 88499 + ... + 88724.

It is an arithmetic number, because the mean of its divisors is an integer number (5050884).

Almost surely, 2^20026199 is an apocalyptic number.

20026199 is a deficient number, since it is larger than the sum of its proper divisors (177337).

20026199 is a wasteful number, since it uses less digits than its factorization.

20026199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177336.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 20026199 is about 4475.0641336186. The cubic root of 20026199 is about 271.5602349884.

The spelling of 20026199 in words is "twenty million, twenty-six thousand, one hundred ninety-nine".