198520726 has 8 divisors (see below), whose sum is σ = 301860504. Its totient is φ = 97900560.

The previous prime is 198520717. The next prime is 198520727. The reversal of 198520726 is 627025891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198520727) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 679720 + ... + 680011.

It is an arithmetic number, because the mean of its divisors is an integer number (37732563).

Almost surely, 2^198520726 is an apocalyptic number.

198520726 is a deficient number, since it is larger than the sum of its proper divisors (103339778).

198520726 is a wasteful number, since it uses less digits than its factorization.

198520726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359806.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 198520726 is about 14089.7383226233. The cubic root of 198520726 is about 583.3581704436.

The spelling of 198520726 in words is "one hundred ninety-eight million, five hundred twenty thousand, seven hundred twenty-six".