198888726 has 8 divisors (see below), whose sum is σ = 397777464. Its totient is φ = 66296240.

The previous prime is 198888707. The next prime is 198888733. The reversal of 198888726 is 627888891.

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

198888726 is an admirable number.

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, 16574055 + ... + 16574066.

It is an arithmetic number, because the mean of its divisors is an integer number (49722183).

Almost surely, 2^198888726 is an apocalyptic number.

198888726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

198888726 is a wasteful number, since it uses less digits than its factorization.

198888726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33148126.

The product of its digits is 3096576, while the sum is 57.

The square root of 198888726 is about 14102.7914258135. The cubic root of 198888726 is about 583.7184070438.

The spelling of 198888726 in words is "one hundred ninety-eight million, eight hundred eighty-eight thousand, seven hundred twenty-six".