11220804 has 54 divisors (see below), whose sum is σ = 32999694. Its totient is φ = 3205440.

The previous prime is 11220779. The next prime is 11220809. The reversal of 11220804 is 40802211.

11220804 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8398404 + 2822400 = 2898^2 + 1680^2 .

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

It is not an unprimeable number, because it can be changed into a prime (11220809) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1417 + ... + 4944.

Almost surely, 2^11220804 is an apocalyptic number.

11220804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

11220804 is an abundant number, since it is smaller than the sum of its proper divisors (21778890).

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

11220804 is a wasteful number, since it uses less digits than its factorization.

11220804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6385 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 11220804 is about 3349.7468561072. The cubic root of 11220804 is about 223.8762337116.

The spelling of 11220804 in words is "eleven million, two hundred twenty thousand, eight hundred four".