11826421 has 8 divisors (see below), whose sum is σ = 12295584. Its totient is φ = 11365200.

The previous prime is 11826413. The next prime is 11826431. The reversal of 11826421 is 12462811.

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 11826421 - 2³ = 11826413 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 (11826401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1146 + ... + 4996.

It is an arithmetic number, because the mean of its divisors is an integer number (1536948).

Almost surely, 2^11826421 is an apocalyptic number.

It is an amenable number.

11826421 is a deficient number, since it is larger than the sum of its proper divisors (469163).

11826421 is an equidigital number, since it uses as much as digits as its factorization.

11826421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971.

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

The square root of 11826421 is about 3438.9563823928. The cubic root of 11826421 is about 227.8336030705.

The spelling of 11826421 in words is "eleven million, eight hundred twenty-six thousand, four hundred twenty-one".