20895198 has 16 divisors (see below), whose sum is σ = 42197376. Its totient is φ = 6897240.

The previous prime is 20895187. The next prime is 20895211. The reversal of 20895198 is 89159802.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16288 + ... + 17523.

It is an arithmetic number, because the mean of its divisors is an integer number (2637336).

Almost surely, 2^20895198 is an apocalyptic number.

20895198 is an abundant number, since it is smaller than the sum of its proper divisors (21302178).

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

20895198 is a wasteful number, since it uses less digits than its factorization.

20895198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33919.

The product of its (nonzero) digits is 51840, while the sum is 42.

The square root of 20895198 is about 4571.1265569879. The cubic root of 20895198 is about 275.4326984284.

The spelling of 20895198 in words is "twenty million, eight hundred ninety-five thousand, one hundred ninety-eight".