11285819 has 4 divisors (see below), whose sum is σ = 11333280. Its totient is φ = 11238360.

The previous prime is 11285809. The next prime is 11285831. The reversal of 11285819 is 91858211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91858211 = 127 ⋅723293.

It is a cyclic number.

It is not a de Polignac number, because 11285819 - 2¹² = 11281723 is a prime.

It is a super-2 number, since 2×11285819² = 254739421001522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11285809) by changing a digit.

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, 23372 + ... + 23849.

It is an arithmetic number, because the mean of its divisors is an integer number (2833320).

Almost surely, 2^11285819 is an apocalyptic number.

11285819 is a deficient number, since it is larger than the sum of its proper divisors (47461).

11285819 is an equidigital number, since it uses as much as digits as its factorization.

11285819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47460.

The product of its digits is 5760, while the sum is 35.

The square root of 11285819 is about 3359.4373040734. The cubic root of 11285819 is about 224.3077919611.

The spelling of 11285819 in words is "eleven million, two hundred eighty-five thousand, eight hundred nineteen".