198056988 has 60 divisors (see below), whose sum is σ = 545027560. Its totient is φ = 62542368.

The previous prime is 198056983. The next prime is 198057001. The reversal of 198056988 is 889650891.

198056988 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198056983) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9931 + ... + 22242.

Almost surely, 2^198056988 is an apocalyptic number.

198056988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

198056988 is an abundant number, since it is smaller than the sum of its proper divisors (346970572).

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

198056988 is a wasteful number, since it uses less digits than its factorization.

198056988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32208 (or 32197 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The square root of 198056988 is about 14073.2721141887. The cubic root of 198056988 is about 582.9035810133.

The spelling of 198056988 in words is "one hundred ninety-eight million, fifty-six thousand, nine hundred eighty-eight".