11321424 has 80 divisors (see below), whose sum is σ = 33033600. Its totient is φ = 3711744.

The previous prime is 11321399. The next prime is 11321437. The reversal of 11321424 is 42412311.

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

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

It is a junction number, because it is equal to n+sod(n) for n = 11321397 and 11321406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31357 + ... + 31715.

It is an arithmetic number, because the mean of its divisors is an integer number (412920).

Almost surely, 2^11321424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11321424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16516800).

11321424 is an abundant number, since it is smaller than the sum of its proper divisors (21712176).

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

11321424 is a wasteful number, since it uses less digits than its factorization.

11321424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449 (or 437 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 11321424 is about 3364.7323816316. The cubic root of 11321424 is about 224.5434297092.

Adding to 11321424 its reverse (42412311), we get a palindrome (53733735).

It can be divided in two parts, 1132 and 1424, that added together give a triangular number (2556 = T₇₁).

The spelling of 11321424 in words is "eleven million, three hundred twenty-one thousand, four hundred twenty-four".