198023071 has 8 divisors (see below), whose sum is σ = 209397888. Its totient is φ = 186960000.

The previous prime is 198023053. The next prime is 198023093. The reversal of 198023071 is 170320891.

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

It is not a de Polignac number, because 198023071 - 2⁵ = 198023039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198023051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76630 + ... + 79171.

It is an arithmetic number, because the mean of its divisors is an integer number (26174736).

Almost surely, 2^198023071 is an apocalyptic number.

198023071 is a deficient number, since it is larger than the sum of its proper divisors (11374817).

198023071 is a wasteful number, since it uses less digits than its factorization.

198023071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155873.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 198023071 is about 14072.0670478789. The cubic root of 198023071 is about 582.8703052886.

The spelling of 198023071 in words is "one hundred ninety-eight million, twenty-three thousand, seventy-one".