11189898 has 24 divisors (see below), whose sum is σ = 25521600. Its totient is φ = 3533544.

The previous prime is 11189869. The next prime is 11189903. The reversal of 11189898 is 89898111.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16018 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (1063400).

Almost surely, 2^11189898 is an apocalyptic number.

11189898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11189898 is an abundant number, since it is smaller than the sum of its proper divisors (14331702).

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

11189898 is a wasteful number, since it uses less digits than its factorization.

11189898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32746 (or 32743 counting only the distinct ones).

The product of its digits is 41472, while the sum is 45.

The square root of 11189898 is about 3345.1304907283. The cubic root of 11189898 is about 223.6705003502.

It can be divided in two parts, 111 and 89898, that added together give a palindrome (90009).

The spelling of 11189898 in words is "eleven million, one hundred eighty-nine thousand, eight hundred ninety-eight".