198858072 has 48 divisors (see below), whose sum is σ = 578315160. Its totient is φ = 56816256.

The previous prime is 198858031. The next prime is 198858151. The reversal of 198858072 is 270858891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83373 + ... + 85724.

Almost surely, 2^198858072 is an apocalyptic number.

198858072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198858072 is an abundant number, since it is smaller than the sum of its proper divisors (379457088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

198858072 is a wasteful number, since it uses less digits than its factorization.

198858072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169120 (or 169109 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 48.

The square root of 198858072 is about 14101.7045778161. The cubic root of 198858072 is about 583.6884167007.

The spelling of 198858072 in words is "one hundred ninety-eight million, eight hundred fifty-eight thousand, seventy-two".