11215804 has 12 divisors (see below), whose sum is σ = 19651744. Its totient is φ = 5601024.

The previous prime is 11215781. The next prime is 11215811. The reversal of 11215804 is 40851211.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4252 + ... + 6364.

Almost surely, 2^11215804 is an apocalyptic number.

It is an amenable number.

11215804 is a deficient number, since it is larger than the sum of its proper divisors (8435940).

11215804 is a wasteful number, since it uses less digits than its factorization.

11215804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444 (or 3442 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 11215804 is about 3349.0004478949. Note that the first 3 decimals coincide. The cubic root of 11215804 is about 223.8429756231.

The spelling of 11215804 in words is "eleven million, two hundred fifteen thousand, eight hundred four".