20198898 has 24 divisors (see below), whose sum is σ = 43992000. Its totient is φ = 6697944.

The previous prime is 20198837. The next prime is 20198903. The reversal of 20198898 is 89889102.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 763 + ... + 6401.

It is an arithmetic number, because the mean of its divisors is an integer number (1833000).

Almost surely, 2^20198898 is an apocalyptic number.

20198898 is an abundant number, since it is smaller than the sum of its proper divisors (23793102).

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

20198898 is a wasteful number, since it uses less digits than its factorization.

20198898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5846 (or 5843 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 20198898 is about 4494.3184132858. The cubic root of 20198898 is about 272.3386155485.

It can be divided in two parts, 201 and 98898, that added together give a palindrome (99099).

The spelling of 20198898 in words is "twenty million, one hundred ninety-eight thousand, eight hundred ninety-eight".