11563804 has 36 divisors (see below), whose sum is σ = 24131520. Its totient is φ = 4831680.

The previous prime is 11563801. The next prime is 11563829. The reversal of 11563804 is 40836511.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11563801) 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 11 ways as a sum of consecutive naturals, for example, 7317 + ... + 8755.

It is an arithmetic number, because the mean of its divisors is an integer number (670320).

Almost surely, 2^11563804 is an apocalyptic number.

11563804 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 11563804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12065760).

11563804 is an abundant number, since it is smaller than the sum of its proper divisors (12567716).

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

11563804 is a wasteful number, since it uses less digits than its factorization.

11563804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 11563804 is about 3400.5593657515. The cubic root of 11563804 is about 226.1345428027.

The spelling of 11563804 in words is "eleven million, five hundred sixty-three thousand, eight hundred four".