3198208 has 54 divisors (see below), whose sum is σ = 7103922. Its totient is φ = 1428480.

The previous prime is 3198199. The next prime is 3198257. The reversal of 3198208 is 8028913.

It can be written as a sum of positive squares in only one way, i.e., 2214144 + 984064 = 1488^2 + 992^2 .

It is a super-2 number, since 2×3198208² = 20457068822528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a self number, because there is not a number n which added to its sum of digits gives 3198208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 103153 + ... + 103183.

Almost surely, 2^3198208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3198208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3551961).

3198208 is an abundant number, since it is smaller than the sum of its proper divisors (3905714).

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

3198208 is an equidigital number, since it uses as much as digits as its factorization.

3198208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 46 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 3198208 is about 1788.3534326301. The cubic root of 3198208 is about 147.3337473741. Note that the first 3 decimals are identical.

The spelling of 3198208 in words is "three million, one hundred ninety-eight thousand, two hundred eight".