1022198 has 8 divisors (see below), whose sum is σ = 1547208. Its totient is φ = 506464.

The previous prime is 1022191. The next prime is 1022201. The reversal of 1022198 is 8912201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1022191) 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 3 ways as a sum of consecutive naturals, for example, 2036 + ... + 2487.

It is an arithmetic number, because the mean of its divisors is an integer number (193401).

2^1022198 is an apocalyptic number.

1022198 is a deficient number, since it is larger than the sum of its proper divisors (525010).

1022198 is a wasteful number, since it uses less digits than its factorization.

1022198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4638.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1022198 is about 1011.0380803906. The cubic root of 1022198 is about 100.7345248558.

Adding to 1022198 its reverse (8912201), we get a palindrome (9934399).

The spelling of 1022198 in words is "one million, twenty-two thousand, one hundred ninety-eight".