11219904 has 112 divisors (see below), whose sum is σ = 33975040. Its totient is φ = 3628800.

The previous prime is 11219903. The next prime is 11219933. The reversal of 11219904 is 40991211.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11219903) 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 in 15 ways as a sum of consecutive naturals, for example, 74229 + ... + 74379.

Almost surely, 2^11219904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11219904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16987520).

11219904 is an abundant number, since it is smaller than the sum of its proper divisors (22755136).

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

11219904 is a wasteful number, since it uses less digits than its factorization.

11219904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 11219904 is about 3349.6125149038. The cubic root of 11219904 is about 223.8702479849.

It can be divided in two parts, 1121 and 9904, that added together give a square (11025 = 105²).

The spelling of 11219904 in words is "eleven million, two hundred nineteen thousand, nine hundred four".