11481582 has 40 divisors (see below), whose sum is σ = 26822376. Its totient is φ = 3276336.

The previous prime is 11481571. The next prime is 11481607. The reversal of 11481582 is 28518411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14008 + ... + 14804.

Almost surely, 2^11481582 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11481582, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13411188).

11481582 is an abundant number, since it is smaller than the sum of its proper divisors (15340794).

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

11481582 is an frugal number, since it uses more digits than its factorization.

11481582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 809 counting only the distinct ones).

The product of its digits is 2560, while the sum is 30.

The square root of 11481582 is about 3388.4483174456. The cubic root of 11481582 is about 225.5973067557.

Adding to 11481582 its reverse (28518411), we get a palindrome (39999993).

The spelling of 11481582 in words is "eleven million, four hundred eighty-one thousand, five hundred eighty-two".