2209104 has 90 divisors (see below), whose sum is σ = 6685770. Its totient is φ = 680064.

The previous prime is 2209079. The next prime is 2209117. The reversal of 2209104 is 4019022.

It can be written as a sum of positive squares in only one way, i.e., 1904400 + 304704 = 1380^2 + 552^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 76162 + ... + 76190.

2^2209104 is an apocalyptic number.

2209104 is a gapful number since it is divisible by the number (24) 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 2209104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3342885).

2209104 is an abundant number, since it is smaller than the sum of its proper divisors (4476666).

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

2209104 is a wasteful number, since it uses less digits than its factorization.

2209104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 2209104 is about 1486.3054867691. The cubic root of 2209104 is about 130.2383005813.

The spelling of 2209104 in words is "two million, two hundred nine thousand, one hundred four".