198031800 has 48 divisors (see below), whose sum is σ = 613900440. Its totient is φ = 52808320.

The previous prime is 198031781. The next prime is 198031831. The reversal of 198031800 is 8130891.

It is a super-2 number, since 2×198031800² = 78433187622480000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 164427 + ... + 165626.

Almost surely, 2^198031800 is an apocalyptic number.

198031800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

198031800 is an abundant number, since it is smaller than the sum of its proper divisors (415868640).

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

198031800 is a wasteful number, since it uses less digits than its factorization.

198031800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330072 (or 330063 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 198031800 is about 14072.3771979009. The cubic root of 198031800 is about 582.8788696108.

The spelling of 198031800 in words is "one hundred ninety-eight million, thirty-one thousand, eight hundred".