11720544 has 72 divisors (see below), whose sum is σ = 33851160. Its totient is φ = 3548160.

The previous prime is 11720537. The next prime is 11720551. The reversal of 11720544 is 44502711.

11720544 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11720537) and next prime (11720551).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11112 + ... + 12120.

It is an arithmetic number, because the mean of its divisors is an integer number (470155).

Almost surely, 2^11720544 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 11720544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16925580).

11720544 is an abundant number, since it is smaller than the sum of its proper divisors (22130616).

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

11720544 is a wasteful number, since it uses less digits than its factorization.

11720544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1025 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 11720544 is about 3423.5280048511. The cubic root of 11720544 is about 227.1516643192.

The spelling of 11720544 in words is "eleven million, seven hundred twenty thousand, five hundred forty-four".