20196198 has 24 divisors (see below), whose sum is σ = 47736936. Its totient is φ = 6120000.

The previous prime is 20196173. The next prime is 20196199. The reversal of 20196198 is 89169102.

20196198 is a `hidden beast` number, since 20 + 19 + 619 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20196199) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50803 + ... + 51198.

It is an arithmetic number, because the mean of its divisors is an integer number (1989039).

Almost surely, 2^20196198 is an apocalyptic number.

20196198 is an abundant number, since it is smaller than the sum of its proper divisors (27540738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20196198 is a wasteful number, since it uses less digits than its factorization.

20196198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102020 (or 102017 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 20196198 is about 4494.0180239959. The cubic root of 20196198 is about 272.3264804470.

The spelling of 20196198 in words is "twenty million, one hundred ninety-six thousand, one hundred ninety-eight".