11426821 has 8 divisors (see below), whose sum is σ = 13412480. Its totient is φ = 9529488.

The previous prime is 11426819. The next prime is 11426827. The reversal of 11426821 is 12862411.

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

It is a cyclic number.

It is not a de Polignac number, because 11426821 - 2¹ = 11426819 is a prime.

It is a Duffinian number.

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11426827) 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, 21801 + ... + 22318.

It is an arithmetic number, because the mean of its divisors is an integer number (1676560).

Almost surely, 2^11426821 is an apocalyptic number.

It is an amenable number.

11426821 is a deficient number, since it is larger than the sum of its proper divisors (1985659).

11426821 is an equidigital number, since it uses as much as digits as its factorization.

11426821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44163.

The product of its digits is 768, while the sum is 25.

The square root of 11426821 is about 3380.3581171231. The cubic root of 11426821 is about 225.2380755722.

The spelling of 11426821 in words is "eleven million, four hundred twenty-six thousand, eight hundred twenty-one".