1198220 has 24 divisors (see below), whose sum is σ = 2537808. Its totient is φ = 475200.

The previous prime is 1198217. The next prime is 1198229. The reversal of 1198220 is 228911.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1198229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3455 + ... + 3785.

It is an arithmetic number, because the mean of its divisors is an integer number (105742).

2^1198220 is an apocalyptic number.

1198220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198220 is an abundant number, since it is smaller than the sum of its proper divisors (1339588).

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

1198220 is a wasteful number, since it uses less digits than its factorization.

1198220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521 (or 519 counting only the distinct ones).

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

The square root of 1198220 is about 1094.6323583743. The cubic root of 1198220 is about 106.2132883549.

The spelling of 1198220 in words is "one million, one hundred ninety-eight thousand, two hundred twenty".