198226656 has 96 divisors (see below), whose sum is σ = 580799520. Its totient is φ = 65774592.

The previous prime is 198226643. The next prime is 198226657. The reversal of 198226656 is 656622891.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198226657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270066 + ... + 270798.

It is an arithmetic number, because the mean of its divisors is an integer number (6049995).

Almost surely, 2^198226656 is an apocalyptic number.

198226656 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 198226656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (290399760).

198226656 is an abundant number, since it is smaller than the sum of its proper divisors (382572864).

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

198226656 is a wasteful number, since it uses less digits than its factorization.

198226656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1051 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 198226656 is about 14079.2988461784. The cubic root of 198226656 is about 583.0699840570.

The spelling of 198226656 in words is "one hundred ninety-eight million, two hundred twenty-six thousand, six hundred fifty-six".