11228605 has 4 divisors (see below), whose sum is σ = 13474332. Its totient is φ = 8982880.

The previous prime is 11228599. The next prime is 11228611. The reversal of 11228605 is 50682211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50682211 = 397 ⋅127663.

It is an interprime number because it is at equal distance from previous prime (11228599) and next prime (11228611).

It can be written as a sum of positive squares in 2 ways, for example, as 2968729 + 8259876 = 1723^2 + 2874^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11228605 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11228605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122856 + ... + 1122865.

It is an arithmetic number, because the mean of its divisors is an integer number (3368583).

Almost surely, 2^11228605 is an apocalyptic number.

It is an amenable number.

11228605 is a deficient number, since it is larger than the sum of its proper divisors (2245727).

11228605 is an equidigital number, since it uses as much as digits as its factorization.

11228605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245726.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 11228605 is about 3350.9110701420. The cubic root of 11228605 is about 223.9281032546.

The spelling of 11228605 in words is "eleven million, two hundred twenty-eight thousand, six hundred five".