11501812 has 48 divisors (see below), whose sum is σ = 24216192. Its totient is φ = 4677120.

The previous prime is 11501801. The next prime is 11501813. The reversal of 11501812 is 21810511.

It is a happy number.

11501812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11501812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11501813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49248 + ... + 49480.

It is an arithmetic number, because the mean of its divisors is an integer number (504504).

Almost surely, 2^11501812 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 11501812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12108096).

11501812 is an abundant number, since it is smaller than the sum of its proper divisors (12714380).

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

11501812 is a wasteful number, since it uses less digits than its factorization.

11501812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 11501812 is about 3391.4321458640. The cubic root of 11501812 is about 225.7297262463.

The spelling of 11501812 in words is "eleven million, five hundred one thousand, eight hundred twelve".