198818256 has 160 divisors (see below), whose sum is σ = 659957760. Its totient is φ = 50130432.

The previous prime is 198818251. The next prime is 198818267. The reversal of 198818256 is 652818891.

It is a super-3 number, since 3×198818256³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198818251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99475 + ... + 101453.

It is an arithmetic number, because the mean of its divisors is an integer number (4124736).

Almost surely, 2^198818256 is an apocalyptic number.

198818256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198818256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329978880).

198818256 is an abundant number, since it is smaller than the sum of its proper divisors (461139504).

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

198818256 is a wasteful number, since it uses less digits than its factorization.

198818256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033 (or 2027 counting only the distinct ones).

The product of its digits is 276480, while the sum is 48.

The square root of 198818256 is about 14100.2927629181. The cubic root of 198818256 is about 583.6494581124.

The spelling of 198818256 in words is "one hundred ninety-eight million, eight hundred eighteen thousand, two hundred fifty-six".