11223815 has 8 divisors (see below), whose sum is σ = 13506048. Its totient is φ = 8954080.

The previous prime is 11223811. The next prime is 11223857. The reversal of 11223815 is 51832211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11223815 - 2² = 11223811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223811) 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 7 ways as a sum of consecutive naturals, for example, 1016 + ... + 4845.

It is an arithmetic number, because the mean of its divisors is an integer number (1688256).

Almost surely, 2^11223815 is an apocalyptic number.

11223815 is a deficient number, since it is larger than the sum of its proper divisors (2282233).

11223815 is an equidigital number, since it uses as much as digits as its factorization.

11223815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6249.

The product of its digits is 480, while the sum is 23.

The square root of 11223815 is about 3350.1962629076. The cubic root of 11223815 is about 223.8962569664.

The spelling of 11223815 in words is "eleven million, two hundred twenty-three thousand, eight hundred fifteen".