11281198 has 4 divisors (see below), whose sum is σ = 16921800. Its totient is φ = 5640598.

The previous prime is 11281177. The next prime is 11281199. The reversal of 11281198 is 89118211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11281199) by changing a digit.

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 as a sum of consecutive naturals, namely, 2820298 + ... + 2820301.

It is an arithmetic number, because the mean of its divisors is an integer number (4230450).

Almost surely, 2^11281198 is an apocalyptic number.

11281198 is a deficient number, since it is larger than the sum of its proper divisors (5640602).

11281198 is an equidigital number, since it uses as much as digits as its factorization.

11281198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5640601.

The product of its digits is 1152, while the sum is 31.

The square root of 11281198 is about 3358.7494696687. The cubic root of 11281198 is about 224.2771733648.

The spelling of 11281198 in words is "eleven million, two hundred eighty-one thousand, one hundred ninety-eight".