11223604 has 72 divisors (see below), whose sum is σ = 25444160. Its totient is φ = 4230144.

The previous prime is 11223593. The next prime is 11223631. The reversal of 11223604 is 40632211.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153712 + ... + 153784.

Almost surely, 2^11223604 is an apocalyptic number.

11223604 is a gapful number since it is divisible by the number (14) 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 11223604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12722080).

11223604 is an abundant number, since it is smaller than the sum of its proper divisors (14220556).

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

11223604 is a wasteful number, since it uses less digits than its factorization.

11223604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 11223604 is about 3350.1647720672. The cubic root of 11223604 is about 223.8948539257.

Adding to 11223604 its reverse (40632211), we get a palindrome (51855815).

It can be divided in two parts, 112 and 23604, that added together give a square (23716 = 154²).

The spelling of 11223604 in words is "eleven million, two hundred twenty-three thousand, six hundred four".