20198358 has 12 divisors (see below), whose sum is σ = 43763148. Its totient is φ = 6732780.

The previous prime is 20198357. The next prime is 20198369. The reversal of 20198358 is 85389102.

It is a super-3 number, since 3×20198358³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20198351) 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 5 ways as a sum of consecutive naturals, for example, 561048 + ... + 561083.

It is an arithmetic number, because the mean of its divisors is an integer number (3646929).

Almost surely, 2^20198358 is an apocalyptic number.

20198358 is an abundant number, since it is smaller than the sum of its proper divisors (23564790).

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

20198358 is a wasteful number, since it uses less digits than its factorization.

20198358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122139 (or 1122136 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 20198358 is about 4494.2583370340. The cubic root of 20198358 is about 272.3361886147.

The spelling of 20198358 in words is "twenty million, one hundred ninety-eight thousand, three hundred fifty-eight".