20020198 has 16 divisors (see below), whose sum is σ = 33523776. Its totient is φ = 8888040.

The previous prime is 20020171. The next prime is 20020199. The reversal of 20020198 is 89102002.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9636 + ... + 11527.

It is an arithmetic number, because the mean of its divisors is an integer number (2095236).

Almost surely, 2^20020198 is an apocalyptic number.

20020198 is a deficient number, since it is larger than the sum of its proper divisors (13503578).

20020198 is a wasteful number, since it uses less digits than its factorization.

20020198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21219.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 20020198 is about 4474.3935901974. The cubic root of 20020198 is about 271.5331072614.

The spelling of 20020198 in words is "twenty million, twenty thousand, one hundred ninety-eight".