11523816 has 64 divisors (see below), whose sum is σ = 33062400. Its totient is φ = 3715200.

The previous prime is 11523781. The next prime is 11523833. The reversal of 11523816 is 61832511.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 11523816.

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, 5836 + ... + 7556.

It is an arithmetic number, because the mean of its divisors is an integer number (516600).

Almost surely, 2^11523816 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 11523816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16531200).

11523816 is an abundant number, since it is smaller than the sum of its proper divisors (21538584).

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

11523816 is a wasteful number, since it uses less digits than its factorization.

11523816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1757 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 11523816 is about 3394.6746530411. The cubic root of 11523816 is about 225.8735816332.

The spelling of 11523816 in words is "eleven million, five hundred twenty-three thousand, eight hundred sixteen".