198226980 has 144 divisors (see below), whose sum is σ = 707898240. Its totient is φ = 45111168.

The previous prime is 198226979. The next prime is 198226993. The reversal of 198226980 is 89622891.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 865506 + ... + 865734.

It is an arithmetic number, because the mean of its divisors is an integer number (4915960).

Almost surely, 2^198226980 is an apocalyptic number.

198226980 is a gapful number since it is divisible by the number (10) 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 198226980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353949120).

198226980 is an abundant number, since it is smaller than the sum of its proper divisors (509671260).

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

198226980 is a wasteful number, since it uses less digits than its factorization.

198226980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 246 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 198226980 is about 14079.3103524285. The cubic root of 198226980 is about 583.0703017314.

198226980 divided by its sum of digits (45) gives a palindrome (4405044).

The spelling of 198226980 in words is "one hundred ninety-eight million, two hundred twenty-six thousand, nine hundred eighty".