198730072 has 16 divisors (see below), whose sum is σ = 379650240. Its totient is φ = 97490016.

The previous prime is 198730067. The next prime is 198730079. The reversal of 198730072 is 270037891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198730079) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 233928 + ... + 234775.

It is an arithmetic number, because the mean of its divisors is an integer number (23728140).

Almost surely, 2^198730072 is an apocalyptic number.

It is an amenable number.

198730072 is a deficient number, since it is larger than the sum of its proper divisors (180920168).

198730072 is a wasteful number, since it uses less digits than its factorization.

198730072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468762 (or 468758 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 198730072 is about 14097.1653888291. The cubic root of 198730072 is about 583.5631545771.

The spelling of 198730072 in words is "one hundred ninety-eight million, seven hundred thirty thousand, seventy-two".