11822520 has 64 divisors (see below), whose sum is σ = 35925120. Its totient is φ = 3112064.

The previous prime is 11822519. The next prime is 11822527. The reversal of 11822520 is 2522811.

It is a happy number.

11822520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11822527) 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, 9367 + ... + 10553.

It is an arithmetic number, because the mean of its divisors is an integer number (561330).

Almost surely, 2^11822520 is an apocalyptic number.

11822520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11822520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17962560).

11822520 is an abundant number, since it is smaller than the sum of its proper divisors (24102600).

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

11822520 is a wasteful number, since it uses less digits than its factorization.

11822520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 11822520 is about 3438.3891577307. The cubic root of 11822520 is about 227.8085496576.

The spelling of 11822520 in words is "eleven million, eight hundred twenty-two thousand, five hundred twenty".