11723616 has 60 divisors (see below), whose sum is σ = 34486452. Its totient is φ = 3907008.

The previous prime is 11723603. The next prime is 11723681. The reversal of 11723616 is 61632711.

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 11723616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 331 + ... + 4853.

Almost surely, 2^11723616 is an apocalyptic number.

11723616 is a gapful number since it is divisible by the number (16) 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 11723616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17243226).

11723616 is an abundant number, since it is smaller than the sum of its proper divisors (22762836).

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

11723616 is an equidigital number, since it uses as much as digits as its factorization.

11723616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4545 (or 4528 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 11723616 is about 3423.9766354343. The cubic root of 11723616 is about 227.1715083627.

The spelling of 11723616 in words is "eleven million, seven hundred twenty-three thousand, six hundred sixteen".