8198420 has 24 divisors (see below), whose sum is σ = 18230184. Its totient is φ = 3086336.

The previous prime is 8198389. The next prime is 8198459. The reversal of 8198420 is 248918.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2274064 + 5924356 = 1508^2 + 2434^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11717 + ... + 12396.

It is an arithmetic number, because the mean of its divisors is an integer number (759591).

Almost surely, 2^8198420 is an apocalyptic number.

It is an amenable number.

8198420 is an abundant number, since it is smaller than the sum of its proper divisors (10031764).

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

8198420 is a wasteful number, since it uses less digits than its factorization.

8198420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24139 (or 24137 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8198420 is about 2863.2883193978. The cubic root of 8198420 is about 201.6400149952.

Adding to 8198420 its product of nonzero digits (4608), we get a palindrome (8203028).

The spelling of 8198420 in words is "eight million, one hundred ninety-eight thousand, four hundred twenty".