198598812 has 24 divisors (see below), whose sum is σ = 463631616. Its totient is φ = 66166128.

The previous prime is 198598801. The next prime is 198598817. The reversal of 198598812 is 218895891.

198598812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×198598812² = 78882976255622688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198598817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35853 + ... + 41019.

It is an arithmetic number, because the mean of its divisors is an integer number (19317984).

Almost surely, 2^198598812 is an apocalyptic number.

198598812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

198598812 is an abundant number, since it is smaller than the sum of its proper divisors (265032804).

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

198598812 is a wasteful number, since it uses less digits than its factorization.

198598812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8377 (or 8375 counting only the distinct ones).

The product of its digits is 414720, while the sum is 51.

The square root of 198598812 is about 14092.5090739726. The cubic root of 198598812 is about 583.4346463123.

The spelling of 198598812 in words is "one hundred ninety-eight million, five hundred ninety-eight thousand, eight hundred twelve".