11209000 has 64 divisors (see below), whose sum is σ = 28641600. Its totient is φ = 4072000.

The previous prime is 11208973. The next prime is 11209007. The reversal of 11209000 is 90211.

It is not an unprimeable number, because it can be changed into a prime (11209007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10491 + ... + 11509.

It is an arithmetic number, because the mean of its divisors is an integer number (447525).

Almost surely, 2^11209000 is an apocalyptic number.

11209000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11209000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14320800).

11209000 is an abundant number, since it is smaller than the sum of its proper divisors (17432600).

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

11209000 is a wasteful number, since it uses less digits than its factorization.

11209000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 11209000 is about 3347.9844683033. The cubic root of 11209000 is about 223.7977021356.

Adding to 11209000 its reverse (90211), we get a palindrome (11299211).

The spelling of 11209000 in words is "eleven million, two hundred nine thousand".