198181230 has 48 divisors (see below), whose sum is σ = 515049840. Its totient is φ = 48781824.

The previous prime is 198181219. The next prime is 198181231. The reversal of 198181230 is 32181891.

It is a junction number, because it is equal to n+sod(n) for n = 198181191 and 198181200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198181231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14475 + ... + 24614.

It is an arithmetic number, because the mean of its divisors is an integer number (10730205).

Almost surely, 2^198181230 is an apocalyptic number.

198181230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198181230 is an abundant number, since it is smaller than the sum of its proper divisors (316868610).

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

198181230 is a wasteful number, since it uses less digits than its factorization.

198181230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39125 (or 39112 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 198181230 is about 14077.6855342063. The cubic root of 198181230 is about 583.0254415097.

The spelling of 198181230 in words is "one hundred ninety-eight million, one hundred eighty-one thousand, two hundred thirty".