11827321 has 8 divisors (see below), whose sum is σ = 13146624. Its totient is φ = 10548720.

The previous prime is 11827303. The next prime is 11827349. The reversal of 11827321 is 12372811.

It is a happy number.

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 11827321 - 2¹⁵ = 11794553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11827301) 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 7 ways as a sum of consecutive naturals, for example, 9561 + ... + 10726.

It is an arithmetic number, because the mean of its divisors is an integer number (1643328).

Almost surely, 2^11827321 is an apocalyptic number.

11827321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11827321 is a deficient number, since it is larger than the sum of its proper divisors (1319303).

11827321 is a wasteful number, since it uses less digits than its factorization.

11827321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20351.

The product of its digits is 672, while the sum is 25.

The square root of 11827321 is about 3439.0872335549. The cubic root of 11827321 is about 227.8393823631.

Subtracting 11827321 from its reverse (12372811), we obtain a triangular number (545490 = T₁₀₄₄).

The spelling of 11827321 in words is "eleven million, eight hundred twenty-seven thousand, three hundred twenty-one".