11821144 has 8 divisors (see below), whose sum is σ = 22164660. Its totient is φ = 5910568.

The previous prime is 11821127. The next prime is 11821151. The reversal of 11821144 is 44112811.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 738814 + ... + 738829.

Almost surely, 2^11821144 is an apocalyptic number.

It is an amenable number.

11821144 is a deficient number, since it is larger than the sum of its proper divisors (10343516).

11821144 is a wasteful number, since it uses less digits than its factorization.

11821144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477649 (or 1477645 counting only the distinct ones).

The product of its digits is 256, while the sum is 22.

The square root of 11821144 is about 3438.1890582107. The cubic root of 11821144 is about 227.7997112507.

Adding to 11821144 its reverse (44112811), we get a palindrome (55933955).

The spelling of 11821144 in words is "eleven million, eight hundred twenty-one thousand, one hundred forty-four".