198730071 has 16 divisors (see below), whose sum is σ = 302373600. Its totient is φ = 128905344.

The previous prime is 198730067. The next prime is 198730079. The reversal of 198730071 is 170037891.

It is not a de Polignac number, because 198730071 - 2² = 198730067 is a prime.

It is a super-2 number, since 2×198730071² = 78987282239330082, which contains 22 as substring.

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98466 + ... + 100463.

It is an arithmetic number, because the mean of its divisors is an integer number (18898350).

Almost surely, 2^198730071 is an apocalyptic number.

198730071 is a deficient number, since it is larger than the sum of its proper divisors (103643529).

198730071 is a wasteful number, since it uses less digits than its factorization.

198730071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198975 (or 198969 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 198730071 is about 14097.1653533609. The cubic root of 198730071 is about 583.5631535983.

The spelling of 198730071 in words is "one hundred ninety-eight million, seven hundred thirty thousand, seventy-one".