198827321 has 12 divisors (see below), whose sum is σ = 249767616. Its totient is φ = 154929720.

The previous prime is 198827309. The next prime is 198827323. The reversal of 198827321 is 123728891.

It is not a de Polignac number, because 198827321 - 2¹⁰ = 198826297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198827323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116525 + ... + 118218.

It is an arithmetic number, because the mean of its divisors is an integer number (20813968).

Almost surely, 2^198827321 is an apocalyptic number.

198827321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

198827321 is a deficient number, since it is larger than the sum of its proper divisors (50940295).

198827321 is a wasteful number, since it uses less digits than its factorization.

198827321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234772 (or 234761 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 198827321 is about 14100.6142064805. The cubic root of 198827321 is about 583.6583283608.

The spelling of 198827321 in words is "one hundred ninety-eight million, eight hundred twenty-seven thousand, three hundred twenty-one".