20002198 has 8 divisors (see below), whose sum is σ = 30156192. Its totient is φ = 9950136.

The previous prime is 20002189. The next prime is 20002201. The reversal of 20002198 is 89120002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24990 + ... + 25777.

It is an arithmetic number, because the mean of its divisors is an integer number (3769524).

Almost surely, 2^20002198 is an apocalyptic number.

20002198 is a deficient number, since it is larger than the sum of its proper divisors (10153994).

20002198 is a wasteful number, since it uses less digits than its factorization.

20002198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50966.

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

The square root of 20002198 is about 4472.3816921189. The cubic root of 20002198 is about 271.4517051118.

The spelling of 20002198 in words is "twenty million, two thousand, one hundred ninety-eight".