11421306 has 24 divisors (see below), whose sum is σ = 26650260. Its totient is φ = 3514176.

The previous prime is 11421269. The next prime is 11421323. The reversal of 11421306 is 60312411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10595025 + 826281 = 3255^2 + 909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 24171 + ... + 24638.

Almost surely, 2^11421306 is an apocalyptic number.

11421306 is an abundant number, since it is smaller than the sum of its proper divisors (15228954).

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

11421306 is a wasteful number, since it uses less digits than its factorization.

11421306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48830 (or 48827 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 11421306 is about 3379.5422766996. The cubic root of 11421306 is about 225.2018337080.

Adding to 11421306 its reverse (60312411), we get a palindrome (71733717).

The spelling of 11421306 in words is "eleven million, four hundred twenty-one thousand, three hundred six".