20198968 has 32 divisors (see below), whose sum is σ = 39836160. Its totient is φ = 9583200.

The previous prime is 20198953. The next prime is 20198977. The reversal of 20198968 is 86989102.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27421 + ... + 28147.

It is an arithmetic number, because the mean of its divisors is an integer number (1244880).

Almost surely, 2^20198968 is an apocalyptic number.

It is an amenable number.

20198968 is a deficient number, since it is larger than the sum of its proper divisors (19637192).

20198968 is a wasteful number, since it uses less digits than its factorization.

20198968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 20198968 is about 4494.3262008893. The cubic root of 20198968 is about 272.3389301478.

The spelling of 20198968 in words is "twenty million, one hundred ninety-eight thousand, nine hundred sixty-eight".